5b1702edc78a63f96cccf6dc2cf2f026110546fd
[ffmpeg.git] / ffmpeg.c
1 /*
2  * ffmpeg main
3  * Copyright (c) 2000-2003 Fabrice Bellard
4  *
5  * This file is part of Libav.
6  *
7  * Libav is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * Libav is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with Libav; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21
22 #include "config.h"
23 #include <ctype.h>
24 #include <string.h>
25 #include <math.h>
26 #include <stdlib.h>
27 #include <errno.h>
28 #include <signal.h>
29 #include <limits.h>
30 #include <unistd.h>
31 #include "libavformat/avformat.h"
32 #include "libavdevice/avdevice.h"
33 #include "libswscale/swscale.h"
34 #include "libavutil/opt.h"
35 #include "libavcodec/audioconvert.h"
36 #include "libavutil/audioconvert.h"
37 #include "libavutil/parseutils.h"
38 #include "libavutil/samplefmt.h"
39 #include "libavutil/colorspace.h"
40 #include "libavutil/fifo.h"
41 #include "libavutil/intreadwrite.h"
42 #include "libavutil/dict.h"
43 #include "libavutil/pixdesc.h"
44 #include "libavutil/avstring.h"
45 #include "libavutil/libm.h"
46 #include "libavformat/os_support.h"
47
48 #if CONFIG_AVFILTER
49 # include "libavfilter/avfilter.h"
50 # include "libavfilter/avfiltergraph.h"
51 # include "libavfilter/vsrc_buffer.h"
52 #endif
53
54 #if HAVE_SYS_RESOURCE_H
55 #include <sys/types.h>
56 #include <sys/time.h>
57 #include <sys/resource.h>
58 #elif HAVE_GETPROCESSTIMES
59 #include <windows.h>
60 #endif
61 #if HAVE_GETPROCESSMEMORYINFO
62 #include <windows.h>
63 #include <psapi.h>
64 #endif
65
66 #if HAVE_SYS_SELECT_H
67 #include <sys/select.h>
68 #endif
69
70 #include <time.h>
71
72 #include "cmdutils.h"
73
74 #include "libavutil/avassert.h"
75
76 const char program_name[] = "ffmpeg";
77 const int program_birth_year = 2000;
78
79 /* select an input stream for an output stream */
80 typedef struct AVStreamMap {
81     int file_index;
82     int stream_index;
83     int sync_file_index;
84     int sync_stream_index;
85 } AVStreamMap;
86
87 /**
88  * select an input file for an output file
89  */
90 typedef struct AVMetaDataMap {
91     int  file;      //< file index
92     char type;      //< type of metadata to copy -- (g)lobal, (s)tream, (c)hapter or (p)rogram
93     int  index;     //< stream/chapter/program number
94 } AVMetaDataMap;
95
96 typedef struct AVChapterMap {
97     int in_file;
98     int out_file;
99 } AVChapterMap;
100
101 static const OptionDef options[];
102
103 #define MAX_FILES 100
104 #define MAX_STREAMS 1024    /* arbitrary sanity check value */
105
106 #define FFM_PACKET_SIZE 4096 //XXX a duplicate of the line in ffm.h
107
108 static const char *last_asked_format = NULL;
109 static int64_t input_files_ts_offset[MAX_FILES];
110 static double *input_files_ts_scale[MAX_FILES] = {NULL};
111 static AVCodec **input_codecs = NULL;
112 static int nb_input_codecs = 0;
113 static int nb_input_files_ts_scale[MAX_FILES] = {0};
114
115 static AVFormatContext *output_files[MAX_FILES];
116 static int nb_output_files = 0;
117
118 static AVStreamMap *stream_maps = NULL;
119 static int nb_stream_maps;
120
121 /* first item specifies output metadata, second is input */
122 static AVMetaDataMap (*meta_data_maps)[2] = NULL;
123 static int nb_meta_data_maps;
124 static int metadata_global_autocopy   = 1;
125 static int metadata_streams_autocopy  = 1;
126 static int metadata_chapters_autocopy = 1;
127
128 static AVChapterMap *chapter_maps = NULL;
129 static int nb_chapter_maps;
130
131 /* indexed by output file stream index */
132 static int *streamid_map = NULL;
133 static int nb_streamid_map = 0;
134
135 static int frame_width  = 0;
136 static int frame_height = 0;
137 static float frame_aspect_ratio = 0;
138 static enum PixelFormat frame_pix_fmt = PIX_FMT_NONE;
139 static enum AVSampleFormat audio_sample_fmt = AV_SAMPLE_FMT_NONE;
140 static int max_frames[4] = {INT_MAX, INT_MAX, INT_MAX, INT_MAX};
141 static AVRational frame_rate;
142 static float video_qscale = 0;
143 static uint16_t *intra_matrix = NULL;
144 static uint16_t *inter_matrix = NULL;
145 static const char *video_rc_override_string=NULL;
146 static int video_disable = 0;
147 static int video_discard = 0;
148 static char *video_codec_name = NULL;
149 static unsigned int video_codec_tag = 0;
150 static char *video_language = NULL;
151 static int same_quality = 0;
152 static int do_deinterlace = 0;
153 static int top_field_first = -1;
154 static int me_threshold = 0;
155 static int intra_dc_precision = 8;
156 static int loop_input = 0;
157 static int loop_output = AVFMT_NOOUTPUTLOOP;
158 static int qp_hist = 0;
159 #if CONFIG_AVFILTER
160 static char *vfilters = NULL;
161 #endif
162
163 static int intra_only = 0;
164 static int audio_sample_rate = 0;
165 static int64_t channel_layout = 0;
166 #define QSCALE_NONE -99999
167 static float audio_qscale = QSCALE_NONE;
168 static int audio_disable = 0;
169 static int audio_channels = 0;
170 static char  *audio_codec_name = NULL;
171 static unsigned int audio_codec_tag = 0;
172 static char *audio_language = NULL;
173
174 static int subtitle_disable = 0;
175 static char *subtitle_codec_name = NULL;
176 static char *subtitle_language = NULL;
177 static unsigned int subtitle_codec_tag = 0;
178
179 static int data_disable = 0;
180 static char *data_codec_name = NULL;
181 static unsigned int data_codec_tag = 0;
182
183 static float mux_preload= 0.5;
184 static float mux_max_delay= 0.7;
185
186 static int64_t recording_time = INT64_MAX;
187 static int64_t start_time = 0;
188 static int64_t recording_timestamp = 0;
189 static int64_t input_ts_offset = 0;
190 static int file_overwrite = 0;
191 static AVDictionary *metadata;
192 static int do_benchmark = 0;
193 static int do_hex_dump = 0;
194 static int do_pkt_dump = 0;
195 static int do_psnr = 0;
196 static int do_pass = 0;
197 static char *pass_logfilename_prefix = NULL;
198 static int audio_stream_copy = 0;
199 static int video_stream_copy = 0;
200 static int subtitle_stream_copy = 0;
201 static int data_stream_copy = 0;
202 static int video_sync_method= -1;
203 static int audio_sync_method= 0;
204 static float audio_drift_threshold= 0.1;
205 static int copy_ts= 0;
206 static int copy_tb;
207 static int opt_shortest = 0;
208 static char *vstats_filename;
209 static FILE *vstats_file;
210 static int opt_programid = 0;
211 static int copy_initial_nonkeyframes = 0;
212
213 static int rate_emu = 0;
214
215 static int  video_channel = 0;
216 static char *video_standard;
217
218 static int audio_volume = 256;
219
220 static int exit_on_error = 0;
221 static int using_stdin = 0;
222 static int verbose = 1;
223 static int thread_count= 1;
224 static int64_t video_size = 0;
225 static int64_t audio_size = 0;
226 static int64_t extra_size = 0;
227 static int nb_frames_dup = 0;
228 static int nb_frames_drop = 0;
229 static int input_sync;
230 static uint64_t limit_filesize = 0;
231 static int force_fps = 0;
232 static char *forced_key_frames = NULL;
233
234 static float dts_delta_threshold = 10;
235
236 static int64_t timer_start;
237
238 static uint8_t *audio_buf;
239 static uint8_t *audio_out;
240 static unsigned int allocated_audio_out_size, allocated_audio_buf_size;
241
242 static short *samples;
243
244 static AVBitStreamFilterContext *video_bitstream_filters=NULL;
245 static AVBitStreamFilterContext *audio_bitstream_filters=NULL;
246 static AVBitStreamFilterContext *subtitle_bitstream_filters=NULL;
247
248 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
249
250 struct AVInputStream;
251
252 typedef struct AVOutputStream {
253     int file_index;          /* file index */
254     int index;               /* stream index in the output file */
255     int source_index;        /* AVInputStream index */
256     AVStream *st;            /* stream in the output file */
257     int encoding_needed;     /* true if encoding needed for this stream */
258     int frame_number;
259     /* input pts and corresponding output pts
260        for A/V sync */
261     //double sync_ipts;        /* dts from the AVPacket of the demuxer in second units */
262     struct AVInputStream *sync_ist; /* input stream to sync against */
263     int64_t sync_opts;       /* output frame counter, could be changed to some true timestamp */ //FIXME look at frame_number
264     AVBitStreamFilterContext *bitstream_filters;
265     AVCodec *enc;
266
267     /* video only */
268     int video_resample;
269     AVFrame pict_tmp;      /* temporary image for resampling */
270     struct SwsContext *img_resample_ctx; /* for image resampling */
271     int resample_height;
272     int resample_width;
273     int resample_pix_fmt;
274     AVRational frame_rate;
275
276     float frame_aspect_ratio;
277
278     /* forced key frames */
279     int64_t *forced_kf_pts;
280     int forced_kf_count;
281     int forced_kf_index;
282
283     /* audio only */
284     int audio_resample;
285     ReSampleContext *resample; /* for audio resampling */
286     int resample_sample_fmt;
287     int resample_channels;
288     int resample_sample_rate;
289     int reformat_pair;
290     AVAudioConvert *reformat_ctx;
291     AVFifoBuffer *fifo;     /* for compression: one audio fifo per codec */
292     FILE *logfile;
293
294 #if CONFIG_AVFILTER
295     AVFilterContext *output_video_filter;
296     AVFilterContext *input_video_filter;
297     AVFilterBufferRef *picref;
298     char *avfilter;
299     AVFilterGraph *graph;
300 #endif
301
302    int sws_flags;
303 } AVOutputStream;
304
305 static AVOutputStream **output_streams_for_file[MAX_FILES] = { NULL };
306 static int nb_output_streams_for_file[MAX_FILES] = { 0 };
307
308 typedef struct AVInputStream {
309     int file_index;
310     AVStream *st;
311     int discard;             /* true if stream data should be discarded */
312     int decoding_needed;     /* true if the packets must be decoded in 'raw_fifo' */
313     int64_t sample_index;      /* current sample */
314
315     int64_t       start;     /* time when read started */
316     int64_t       next_pts;  /* synthetic pts for cases where pkt.pts
317                                 is not defined */
318     int64_t       pts;       /* current pts */
319     PtsCorrectionContext pts_ctx;
320     int is_start;            /* is 1 at the start and after a discontinuity */
321     int showed_multi_packet_warning;
322     int is_past_recording_time;
323 #if CONFIG_AVFILTER
324     AVFrame *filter_frame;
325     int has_filter_frame;
326 #endif
327 } AVInputStream;
328
329 typedef struct AVInputFile {
330     AVFormatContext *ctx;
331     int eof_reached;      /* true if eof reached */
332     int ist_index;        /* index of first stream in ist_table */
333     int buffer_size;      /* current total buffer size */
334 } AVInputFile;
335
336 static AVInputStream *input_streams = NULL;
337 static int         nb_input_streams = 0;
338 static AVInputFile   *input_files   = NULL;
339 static int         nb_input_files   = 0;
340
341 #if CONFIG_AVFILTER
342
343 static int configure_video_filters(AVInputStream *ist, AVOutputStream *ost)
344 {
345     AVFilterContext *last_filter, *filter;
346     /** filter graph containing all filters including input & output */
347     AVCodecContext *codec = ost->st->codec;
348     AVCodecContext *icodec = ist->st->codec;
349     FFSinkContext ffsink_ctx = { .pix_fmt = codec->pix_fmt };
350     AVRational sample_aspect_ratio;
351     char args[255];
352     int ret;
353
354     ost->graph = avfilter_graph_alloc();
355
356     if (ist->st->sample_aspect_ratio.num){
357         sample_aspect_ratio = ist->st->sample_aspect_ratio;
358     }else
359         sample_aspect_ratio = ist->st->codec->sample_aspect_ratio;
360
361     snprintf(args, 255, "%d:%d:%d:%d:%d:%d:%d", ist->st->codec->width,
362              ist->st->codec->height, ist->st->codec->pix_fmt, 1, AV_TIME_BASE,
363              sample_aspect_ratio.num, sample_aspect_ratio.den);
364
365     ret = avfilter_graph_create_filter(&ost->input_video_filter, avfilter_get_by_name("buffer"),
366                                        "src", args, NULL, ost->graph);
367     if (ret < 0)
368         return ret;
369     ret = avfilter_graph_create_filter(&ost->output_video_filter, &ffsink,
370                                        "out", NULL, &ffsink_ctx, ost->graph);
371     if (ret < 0)
372         return ret;
373     last_filter = ost->input_video_filter;
374
375     if (codec->width  != icodec->width || codec->height != icodec->height) {
376         snprintf(args, 255, "%d:%d:flags=0x%X",
377                  codec->width,
378                  codec->height,
379                  ost->sws_flags);
380         if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
381                                                 NULL, args, NULL, ost->graph)) < 0)
382             return ret;
383         if ((ret = avfilter_link(last_filter, 0, filter, 0)) < 0)
384             return ret;
385         last_filter = filter;
386     }
387
388     snprintf(args, sizeof(args), "flags=0x%X", ost->sws_flags);
389     ost->graph->scale_sws_opts = av_strdup(args);
390
391     if (ost->avfilter) {
392         AVFilterInOut *outputs = av_malloc(sizeof(AVFilterInOut));
393         AVFilterInOut *inputs  = av_malloc(sizeof(AVFilterInOut));
394
395         outputs->name    = av_strdup("in");
396         outputs->filter_ctx = last_filter;
397         outputs->pad_idx = 0;
398         outputs->next    = NULL;
399
400         inputs->name    = av_strdup("out");
401         inputs->filter_ctx = ost->output_video_filter;
402         inputs->pad_idx = 0;
403         inputs->next    = NULL;
404
405         if ((ret = avfilter_graph_parse(ost->graph, ost->avfilter, inputs, outputs, NULL)) < 0)
406             return ret;
407         av_freep(&ost->avfilter);
408     } else {
409         if ((ret = avfilter_link(last_filter, 0, ost->output_video_filter, 0)) < 0)
410             return ret;
411     }
412
413     if ((ret = avfilter_graph_config(ost->graph, NULL)) < 0)
414         return ret;
415
416     codec->width  = ost->output_video_filter->inputs[0]->w;
417     codec->height = ost->output_video_filter->inputs[0]->h;
418     codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
419         ost->frame_aspect_ratio ? // overriden by the -aspect cli option
420         av_d2q(ost->frame_aspect_ratio*codec->height/codec->width, 255) :
421         ost->output_video_filter->inputs[0]->sample_aspect_ratio;
422
423     return 0;
424 }
425 #endif /* CONFIG_AVFILTER */
426
427 static void term_exit(void)
428 {
429     av_log(NULL, AV_LOG_QUIET, "");
430 }
431
432 static volatile int received_sigterm = 0;
433 static volatile int received_nb_signals = 0;
434
435 static void
436 sigterm_handler(int sig)
437 {
438     received_sigterm = sig;
439     received_nb_signals++;
440     term_exit();
441 }
442
443 static void term_init(void)
444 {
445     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).  */
446     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
447 #ifdef SIGXCPU
448     signal(SIGXCPU, sigterm_handler);
449 #endif
450 }
451
452 static int decode_interrupt_cb(void)
453 {
454     return received_nb_signals > 1;
455 }
456
457 static int ffmpeg_exit(int ret)
458 {
459     int i;
460
461     /* close files */
462     for(i=0;i<nb_output_files;i++) {
463         AVFormatContext *s = output_files[i];
464         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
465             avio_close(s->pb);
466         avformat_free_context(s);
467         av_free(output_streams_for_file[i]);
468     }
469     for(i=0;i<nb_input_files;i++) {
470         av_close_input_file(input_files[i].ctx);
471         av_free(input_files_ts_scale[i]);
472     }
473
474     av_free(intra_matrix);
475     av_free(inter_matrix);
476
477     if (vstats_file)
478         fclose(vstats_file);
479     av_free(vstats_filename);
480
481     av_free(streamid_map);
482     av_free(input_codecs);
483     av_free(stream_maps);
484     av_free(meta_data_maps);
485
486     av_freep(&input_streams);
487     av_freep(&input_files);
488
489     av_free(video_codec_name);
490     av_free(audio_codec_name);
491     av_free(subtitle_codec_name);
492     av_free(data_codec_name);
493
494     av_free(video_standard);
495
496     uninit_opts();
497     av_free(audio_buf);
498     av_free(audio_out);
499     allocated_audio_buf_size= allocated_audio_out_size= 0;
500     av_free(samples);
501
502 #if CONFIG_AVFILTER
503     avfilter_uninit();
504 #endif
505
506     if (received_sigterm) {
507         fprintf(stderr,
508             "Received signal %d: terminating.\n",
509             (int) received_sigterm);
510         exit (255);
511     }
512
513     exit(ret); /* not all OS-es handle main() return value */
514     return ret;
515 }
516
517 /* similar to ff_dynarray_add() and av_fast_realloc() */
518 static void *grow_array(void *array, int elem_size, int *size, int new_size)
519 {
520     if (new_size >= INT_MAX / elem_size) {
521         fprintf(stderr, "Array too big.\n");
522         ffmpeg_exit(1);
523     }
524     if (*size < new_size) {
525         uint8_t *tmp = av_realloc(array, new_size*elem_size);
526         if (!tmp) {
527             fprintf(stderr, "Could not alloc buffer.\n");
528             ffmpeg_exit(1);
529         }
530         memset(tmp + *size*elem_size, 0, (new_size-*size) * elem_size);
531         *size = new_size;
532         return tmp;
533     }
534     return array;
535 }
536
537 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
538 {
539     if(codec && codec->sample_fmts){
540         const enum AVSampleFormat *p= codec->sample_fmts;
541         for(; *p!=-1; p++){
542             if(*p == st->codec->sample_fmt)
543                 break;
544         }
545         if (*p == -1) {
546             av_log(NULL, AV_LOG_WARNING,
547                    "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
548                    av_get_sample_fmt_name(st->codec->sample_fmt),
549                    codec->name,
550                    av_get_sample_fmt_name(codec->sample_fmts[0]));
551             st->codec->sample_fmt = codec->sample_fmts[0];
552         }
553     }
554 }
555
556 /**
557  * Update the requested input sample format based on the output sample format.
558  * This is currently only used to request float output from decoders which
559  * support multiple sample formats, one of which is AV_SAMPLE_FMT_FLT.
560  * Ideally this will be removed in the future when decoders do not do format
561  * conversion and only output in their native format.
562  */
563 static void update_sample_fmt(AVCodecContext *dec, AVCodec *dec_codec,
564                               AVCodecContext *enc)
565 {
566     /* if sample formats match or a decoder sample format has already been
567        requested, just return */
568     if (enc->sample_fmt == dec->sample_fmt ||
569         dec->request_sample_fmt > AV_SAMPLE_FMT_NONE)
570         return;
571
572     /* if decoder supports more than one output format */
573     if (dec_codec && dec_codec->sample_fmts &&
574         dec_codec->sample_fmts[0] != AV_SAMPLE_FMT_NONE &&
575         dec_codec->sample_fmts[1] != AV_SAMPLE_FMT_NONE) {
576         const enum AVSampleFormat *p;
577         int min_dec = -1, min_inc = -1;
578
579         /* find a matching sample format in the encoder */
580         for (p = dec_codec->sample_fmts; *p != AV_SAMPLE_FMT_NONE; p++) {
581             if (*p == enc->sample_fmt) {
582                 dec->request_sample_fmt = *p;
583                 return;
584             } else if (*p > enc->sample_fmt) {
585                 min_inc = FFMIN(min_inc, *p - enc->sample_fmt);
586             } else
587                 min_dec = FFMIN(min_dec, enc->sample_fmt - *p);
588         }
589
590         /* if none match, provide the one that matches quality closest */
591         dec->request_sample_fmt = min_inc > 0 ? enc->sample_fmt + min_inc :
592                                   enc->sample_fmt - min_dec;
593     }
594 }
595
596 static void choose_sample_rate(AVStream *st, AVCodec *codec)
597 {
598     if(codec && codec->supported_samplerates){
599         const int *p= codec->supported_samplerates;
600         int best=0;
601         int best_dist=INT_MAX;
602         for(; *p; p++){
603             int dist= abs(st->codec->sample_rate - *p);
604             if(dist < best_dist){
605                 best_dist= dist;
606                 best= *p;
607             }
608         }
609         if(best_dist){
610             av_log(st->codec, AV_LOG_WARNING, "Requested sampling rate unsupported using closest supported (%d)\n", best);
611         }
612         st->codec->sample_rate= best;
613     }
614 }
615
616 static void choose_pixel_fmt(AVStream *st, AVCodec *codec)
617 {
618     if(codec && codec->pix_fmts){
619         const enum PixelFormat *p= codec->pix_fmts;
620         if(st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL){
621             if(st->codec->codec_id==CODEC_ID_MJPEG){
622                 p= (const enum PixelFormat[]){PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE};
623             }else if(st->codec->codec_id==CODEC_ID_LJPEG){
624                 p= (const enum PixelFormat[]){PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUVJ444P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_YUV444P, PIX_FMT_BGRA, PIX_FMT_NONE};
625             }
626         }
627         for(; *p!=-1; p++){
628             if(*p == st->codec->pix_fmt)
629                 break;
630         }
631         if (*p == -1) {
632             if(st->codec->pix_fmt != PIX_FMT_NONE)
633                 av_log(NULL, AV_LOG_WARNING,
634                         "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
635                         av_pix_fmt_descriptors[st->codec->pix_fmt].name,
636                         codec->name,
637                         av_pix_fmt_descriptors[codec->pix_fmts[0]].name);
638             st->codec->pix_fmt = codec->pix_fmts[0];
639         }
640     }
641 }
642
643 static AVOutputStream *new_output_stream(AVFormatContext *oc, int file_idx)
644 {
645     int idx = oc->nb_streams - 1;
646     AVOutputStream *ost;
647
648     output_streams_for_file[file_idx] =
649         grow_array(output_streams_for_file[file_idx],
650                    sizeof(*output_streams_for_file[file_idx]),
651                    &nb_output_streams_for_file[file_idx],
652                    oc->nb_streams);
653     ost = output_streams_for_file[file_idx][idx] =
654         av_mallocz(sizeof(AVOutputStream));
655     if (!ost) {
656         fprintf(stderr, "Could not alloc output stream\n");
657         ffmpeg_exit(1);
658     }
659     ost->file_index = file_idx;
660     ost->index = idx;
661
662     ost->sws_flags = av_get_int(sws_opts, "sws_flags", NULL);
663     return ost;
664 }
665
666 static int read_ffserver_streams(AVFormatContext *s, const char *filename)
667 {
668     int i, err;
669     AVFormatContext *ic;
670     int nopts = 0;
671
672     err = av_open_input_file(&ic, filename, NULL, FFM_PACKET_SIZE, NULL);
673     if (err < 0)
674         return err;
675     /* copy stream format */
676     s->nb_streams = 0;
677     s->streams = av_mallocz(sizeof(AVStream *) * ic->nb_streams);
678     for(i=0;i<ic->nb_streams;i++) {
679         AVStream *st;
680         AVCodec *codec;
681
682         s->nb_streams++;
683
684         // FIXME: a more elegant solution is needed
685         st = av_mallocz(sizeof(AVStream));
686         memcpy(st, ic->streams[i], sizeof(AVStream));
687         st->info = NULL;
688         st->codec = avcodec_alloc_context();
689         if (!st->codec) {
690             print_error(filename, AVERROR(ENOMEM));
691             ffmpeg_exit(1);
692         }
693         avcodec_copy_context(st->codec, ic->streams[i]->codec);
694         s->streams[i] = st;
695
696         codec = avcodec_find_encoder(st->codec->codec_id);
697         if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
698             if (audio_stream_copy) {
699                 st->stream_copy = 1;
700             } else
701                 choose_sample_fmt(st, codec);
702         } else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
703             if (video_stream_copy) {
704                 st->stream_copy = 1;
705             } else
706                 choose_pixel_fmt(st, codec);
707         }
708
709         if(st->codec->flags & CODEC_FLAG_BITEXACT)
710             nopts = 1;
711
712         new_output_stream(s, nb_output_files);
713     }
714
715     if (!nopts)
716         s->timestamp = av_gettime();
717
718     av_close_input_file(ic);
719     return 0;
720 }
721
722 static double
723 get_sync_ipts(const AVOutputStream *ost)
724 {
725     const AVInputStream *ist = ost->sync_ist;
726     return (double)(ist->pts - start_time)/AV_TIME_BASE;
727 }
728
729 static void write_frame(AVFormatContext *s, AVPacket *pkt, AVCodecContext *avctx, AVBitStreamFilterContext *bsfc){
730     int ret;
731
732     while(bsfc){
733         AVPacket new_pkt= *pkt;
734         int a= av_bitstream_filter_filter(bsfc, avctx, NULL,
735                                           &new_pkt.data, &new_pkt.size,
736                                           pkt->data, pkt->size,
737                                           pkt->flags & AV_PKT_FLAG_KEY);
738         if(a>0){
739             av_free_packet(pkt);
740             new_pkt.destruct= av_destruct_packet;
741         } else if(a<0){
742             fprintf(stderr, "%s failed for stream %d, codec %s",
743                     bsfc->filter->name, pkt->stream_index,
744                     avctx->codec ? avctx->codec->name : "copy");
745             print_error("", a);
746             if (exit_on_error)
747                 ffmpeg_exit(1);
748         }
749         *pkt= new_pkt;
750
751         bsfc= bsfc->next;
752     }
753
754     ret= av_interleaved_write_frame(s, pkt);
755     if(ret < 0){
756         print_error("av_interleaved_write_frame()", ret);
757         ffmpeg_exit(1);
758     }
759 }
760
761 #define MAX_AUDIO_PACKET_SIZE (128 * 1024)
762
763 static void do_audio_out(AVFormatContext *s,
764                          AVOutputStream *ost,
765                          AVInputStream *ist,
766                          unsigned char *buf, int size)
767 {
768     uint8_t *buftmp;
769     int64_t audio_out_size, audio_buf_size;
770     int64_t allocated_for_size= size;
771
772     int size_out, frame_bytes, ret, resample_changed;
773     AVCodecContext *enc= ost->st->codec;
774     AVCodecContext *dec= ist->st->codec;
775     int osize= av_get_bits_per_sample_fmt(enc->sample_fmt)/8;
776     int isize= av_get_bits_per_sample_fmt(dec->sample_fmt)/8;
777     const int coded_bps = av_get_bits_per_sample(enc->codec->id);
778
779 need_realloc:
780     audio_buf_size= (allocated_for_size + isize*dec->channels - 1) / (isize*dec->channels);
781     audio_buf_size= (audio_buf_size*enc->sample_rate + dec->sample_rate) / dec->sample_rate;
782     audio_buf_size= audio_buf_size*2 + 10000; //safety factors for the deprecated resampling API
783     audio_buf_size= FFMAX(audio_buf_size, enc->frame_size);
784     audio_buf_size*= osize*enc->channels;
785
786     audio_out_size= FFMAX(audio_buf_size, enc->frame_size * osize * enc->channels);
787     if(coded_bps > 8*osize)
788         audio_out_size= audio_out_size * coded_bps / (8*osize);
789     audio_out_size += FF_MIN_BUFFER_SIZE;
790
791     if(audio_out_size > INT_MAX || audio_buf_size > INT_MAX){
792         fprintf(stderr, "Buffer sizes too large\n");
793         ffmpeg_exit(1);
794     }
795
796     av_fast_malloc(&audio_buf, &allocated_audio_buf_size, audio_buf_size);
797     av_fast_malloc(&audio_out, &allocated_audio_out_size, audio_out_size);
798     if (!audio_buf || !audio_out){
799         fprintf(stderr, "Out of memory in do_audio_out\n");
800         ffmpeg_exit(1);
801     }
802
803     if (enc->channels != dec->channels || enc->sample_rate != dec->sample_rate)
804         ost->audio_resample = 1;
805
806     resample_changed = ost->resample_sample_fmt  != dec->sample_fmt ||
807                        ost->resample_channels    != dec->channels   ||
808                        ost->resample_sample_rate != dec->sample_rate;
809
810     if ((ost->audio_resample && !ost->resample) || resample_changed) {
811         if (resample_changed) {
812             av_log(NULL, AV_LOG_INFO, "Input stream #%d.%d frame changed from rate:%d fmt:%s ch:%d to rate:%d fmt:%s ch:%d\n",
813                    ist->file_index, ist->st->index,
814                    ost->resample_sample_rate, av_get_sample_fmt_name(ost->resample_sample_fmt), ost->resample_channels,
815                    dec->sample_rate, av_get_sample_fmt_name(dec->sample_fmt), dec->channels);
816             ost->resample_sample_fmt  = dec->sample_fmt;
817             ost->resample_channels    = dec->channels;
818             ost->resample_sample_rate = dec->sample_rate;
819             if (ost->resample)
820                 audio_resample_close(ost->resample);
821         }
822         /* if audio_sync_method is >1 the resampler is needed for audio drift compensation */
823         if (audio_sync_method <= 1 &&
824             ost->resample_sample_fmt  == enc->sample_fmt &&
825             ost->resample_channels    == enc->channels   &&
826             ost->resample_sample_rate == enc->sample_rate) {
827             ost->resample = NULL;
828             ost->audio_resample = 0;
829         } else if (ost->audio_resample) {
830             if (dec->sample_fmt != AV_SAMPLE_FMT_S16)
831                 fprintf(stderr, "Warning, using s16 intermediate sample format for resampling\n");
832             ost->resample = av_audio_resample_init(enc->channels,    dec->channels,
833                                                    enc->sample_rate, dec->sample_rate,
834                                                    enc->sample_fmt,  dec->sample_fmt,
835                                                    16, 10, 0, 0.8);
836             if (!ost->resample) {
837                 fprintf(stderr, "Can not resample %d channels @ %d Hz to %d channels @ %d Hz\n",
838                         dec->channels, dec->sample_rate,
839                         enc->channels, enc->sample_rate);
840                 ffmpeg_exit(1);
841             }
842         }
843     }
844
845 #define MAKE_SFMT_PAIR(a,b) ((a)+AV_SAMPLE_FMT_NB*(b))
846     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt &&
847         MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt)!=ost->reformat_pair) {
848         if (ost->reformat_ctx)
849             av_audio_convert_free(ost->reformat_ctx);
850         ost->reformat_ctx = av_audio_convert_alloc(enc->sample_fmt, 1,
851                                                    dec->sample_fmt, 1, NULL, 0);
852         if (!ost->reformat_ctx) {
853             fprintf(stderr, "Cannot convert %s sample format to %s sample format\n",
854                 av_get_sample_fmt_name(dec->sample_fmt),
855                 av_get_sample_fmt_name(enc->sample_fmt));
856             ffmpeg_exit(1);
857         }
858         ost->reformat_pair=MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt);
859     }
860
861     if(audio_sync_method){
862         double delta = get_sync_ipts(ost) * enc->sample_rate - ost->sync_opts
863                 - av_fifo_size(ost->fifo)/(enc->channels * 2);
864         double idelta= delta*dec->sample_rate / enc->sample_rate;
865         int byte_delta= ((int)idelta)*2*dec->channels;
866
867         //FIXME resample delay
868         if(fabs(delta) > 50){
869             if(ist->is_start || fabs(delta) > audio_drift_threshold*enc->sample_rate){
870                 if(byte_delta < 0){
871                     byte_delta= FFMAX(byte_delta, -size);
872                     size += byte_delta;
873                     buf  -= byte_delta;
874                     if(verbose > 2)
875                         fprintf(stderr, "discarding %d audio samples\n", (int)-delta);
876                     if(!size)
877                         return;
878                     ist->is_start=0;
879                 }else{
880                     static uint8_t *input_tmp= NULL;
881                     input_tmp= av_realloc(input_tmp, byte_delta + size);
882
883                     if(byte_delta > allocated_for_size - size){
884                         allocated_for_size= byte_delta + (int64_t)size;
885                         goto need_realloc;
886                     }
887                     ist->is_start=0;
888
889                     memset(input_tmp, 0, byte_delta);
890                     memcpy(input_tmp + byte_delta, buf, size);
891                     buf= input_tmp;
892                     size += byte_delta;
893                     if(verbose > 2)
894                         fprintf(stderr, "adding %d audio samples of silence\n", (int)delta);
895                 }
896             }else if(audio_sync_method>1){
897                 int comp= av_clip(delta, -audio_sync_method, audio_sync_method);
898                 av_assert0(ost->audio_resample);
899                 if(verbose > 2)
900                     fprintf(stderr, "compensating audio timestamp drift:%f compensation:%d in:%d\n", delta, comp, enc->sample_rate);
901 //                fprintf(stderr, "drift:%f len:%d opts:%"PRId64" ipts:%"PRId64" fifo:%d\n", delta, -1, ost->sync_opts, (int64_t)(get_sync_ipts(ost) * enc->sample_rate), av_fifo_size(ost->fifo)/(ost->st->codec->channels * 2));
902                 av_resample_compensate(*(struct AVResampleContext**)ost->resample, comp, enc->sample_rate);
903             }
904         }
905     }else
906         ost->sync_opts= lrintf(get_sync_ipts(ost) * enc->sample_rate)
907                         - av_fifo_size(ost->fifo)/(enc->channels * 2); //FIXME wrong
908
909     if (ost->audio_resample) {
910         buftmp = audio_buf;
911         size_out = audio_resample(ost->resample,
912                                   (short *)buftmp, (short *)buf,
913                                   size / (dec->channels * isize));
914         size_out = size_out * enc->channels * osize;
915     } else {
916         buftmp = buf;
917         size_out = size;
918     }
919
920     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt) {
921         const void *ibuf[6]= {buftmp};
922         void *obuf[6]= {audio_buf};
923         int istride[6]= {isize};
924         int ostride[6]= {osize};
925         int len= size_out/istride[0];
926         if (av_audio_convert(ost->reformat_ctx, obuf, ostride, ibuf, istride, len)<0) {
927             printf("av_audio_convert() failed\n");
928             if (exit_on_error)
929                 ffmpeg_exit(1);
930             return;
931         }
932         buftmp = audio_buf;
933         size_out = len*osize;
934     }
935
936     /* now encode as many frames as possible */
937     if (enc->frame_size > 1) {
938         /* output resampled raw samples */
939         if (av_fifo_realloc2(ost->fifo, av_fifo_size(ost->fifo) + size_out) < 0) {
940             fprintf(stderr, "av_fifo_realloc2() failed\n");
941             ffmpeg_exit(1);
942         }
943         av_fifo_generic_write(ost->fifo, buftmp, size_out, NULL);
944
945         frame_bytes = enc->frame_size * osize * enc->channels;
946
947         while (av_fifo_size(ost->fifo) >= frame_bytes) {
948             AVPacket pkt;
949             av_init_packet(&pkt);
950
951             av_fifo_generic_read(ost->fifo, audio_buf, frame_bytes, NULL);
952
953             //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
954
955             ret = avcodec_encode_audio(enc, audio_out, audio_out_size,
956                                        (short *)audio_buf);
957             if (ret < 0) {
958                 fprintf(stderr, "Audio encoding failed\n");
959                 ffmpeg_exit(1);
960             }
961             audio_size += ret;
962             pkt.stream_index= ost->index;
963             pkt.data= audio_out;
964             pkt.size= ret;
965             if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
966                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
967             pkt.flags |= AV_PKT_FLAG_KEY;
968             write_frame(s, &pkt, enc, ost->bitstream_filters);
969
970             ost->sync_opts += enc->frame_size;
971         }
972     } else {
973         AVPacket pkt;
974         av_init_packet(&pkt);
975
976         ost->sync_opts += size_out / (osize * enc->channels);
977
978         /* output a pcm frame */
979         /* determine the size of the coded buffer */
980         size_out /= osize;
981         if (coded_bps)
982             size_out = size_out*coded_bps/8;
983
984         if(size_out > audio_out_size){
985             fprintf(stderr, "Internal error, buffer size too small\n");
986             ffmpeg_exit(1);
987         }
988
989         //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
990         ret = avcodec_encode_audio(enc, audio_out, size_out,
991                                    (short *)buftmp);
992         if (ret < 0) {
993             fprintf(stderr, "Audio encoding failed\n");
994             ffmpeg_exit(1);
995         }
996         audio_size += ret;
997         pkt.stream_index= ost->index;
998         pkt.data= audio_out;
999         pkt.size= ret;
1000         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1001             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1002         pkt.flags |= AV_PKT_FLAG_KEY;
1003         write_frame(s, &pkt, enc, ost->bitstream_filters);
1004     }
1005 }
1006
1007 static void pre_process_video_frame(AVInputStream *ist, AVPicture *picture, void **bufp)
1008 {
1009     AVCodecContext *dec;
1010     AVPicture *picture2;
1011     AVPicture picture_tmp;
1012     uint8_t *buf = 0;
1013
1014     dec = ist->st->codec;
1015
1016     /* deinterlace : must be done before any resize */
1017     if (do_deinterlace) {
1018         int size;
1019
1020         /* create temporary picture */
1021         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
1022         buf = av_malloc(size);
1023         if (!buf)
1024             return;
1025
1026         picture2 = &picture_tmp;
1027         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
1028
1029         if(avpicture_deinterlace(picture2, picture,
1030                                  dec->pix_fmt, dec->width, dec->height) < 0) {
1031             /* if error, do not deinterlace */
1032             fprintf(stderr, "Deinterlacing failed\n");
1033             av_free(buf);
1034             buf = NULL;
1035             picture2 = picture;
1036         }
1037     } else {
1038         picture2 = picture;
1039     }
1040
1041     if (picture != picture2)
1042         *picture = *picture2;
1043     *bufp = buf;
1044 }
1045
1046 /* we begin to correct av delay at this threshold */
1047 #define AV_DELAY_MAX 0.100
1048
1049 static void do_subtitle_out(AVFormatContext *s,
1050                             AVOutputStream *ost,
1051                             AVInputStream *ist,
1052                             AVSubtitle *sub,
1053                             int64_t pts)
1054 {
1055     static uint8_t *subtitle_out = NULL;
1056     int subtitle_out_max_size = 1024 * 1024;
1057     int subtitle_out_size, nb, i;
1058     AVCodecContext *enc;
1059     AVPacket pkt;
1060
1061     if (pts == AV_NOPTS_VALUE) {
1062         fprintf(stderr, "Subtitle packets must have a pts\n");
1063         if (exit_on_error)
1064             ffmpeg_exit(1);
1065         return;
1066     }
1067
1068     enc = ost->st->codec;
1069
1070     if (!subtitle_out) {
1071         subtitle_out = av_malloc(subtitle_out_max_size);
1072     }
1073
1074     /* Note: DVB subtitle need one packet to draw them and one other
1075        packet to clear them */
1076     /* XXX: signal it in the codec context ? */
1077     if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1078         nb = 2;
1079     else
1080         nb = 1;
1081
1082     for(i = 0; i < nb; i++) {
1083         sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1084         // start_display_time is required to be 0
1085         sub->pts              += av_rescale_q(sub->start_display_time, (AVRational){1, 1000}, AV_TIME_BASE_Q);
1086         sub->end_display_time -= sub->start_display_time;
1087         sub->start_display_time = 0;
1088         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1089                                                     subtitle_out_max_size, sub);
1090         if (subtitle_out_size < 0) {
1091             fprintf(stderr, "Subtitle encoding failed\n");
1092             ffmpeg_exit(1);
1093         }
1094
1095         av_init_packet(&pkt);
1096         pkt.stream_index = ost->index;
1097         pkt.data = subtitle_out;
1098         pkt.size = subtitle_out_size;
1099         pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1100         if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1101             /* XXX: the pts correction is handled here. Maybe handling
1102                it in the codec would be better */
1103             if (i == 0)
1104                 pkt.pts += 90 * sub->start_display_time;
1105             else
1106                 pkt.pts += 90 * sub->end_display_time;
1107         }
1108         write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1109     }
1110 }
1111
1112 static int bit_buffer_size= 1024*256;
1113 static uint8_t *bit_buffer= NULL;
1114
1115 static void do_video_out(AVFormatContext *s,
1116                          AVOutputStream *ost,
1117                          AVInputStream *ist,
1118                          AVFrame *in_picture,
1119                          int *frame_size)
1120 {
1121     int nb_frames, i, ret, resample_changed;
1122     AVFrame *final_picture, *formatted_picture;
1123     AVCodecContext *enc, *dec;
1124     double sync_ipts;
1125
1126     enc = ost->st->codec;
1127     dec = ist->st->codec;
1128
1129     sync_ipts = get_sync_ipts(ost) / av_q2d(enc->time_base);
1130
1131     /* by default, we output a single frame */
1132     nb_frames = 1;
1133
1134     *frame_size = 0;
1135
1136     if(video_sync_method){
1137         double vdelta = sync_ipts - ost->sync_opts;
1138         //FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1139         if (vdelta < -1.1)
1140             nb_frames = 0;
1141         else if (video_sync_method == 2 || (video_sync_method<0 && (s->oformat->flags & AVFMT_VARIABLE_FPS))){
1142             if(vdelta<=-0.6){
1143                 nb_frames=0;
1144             }else if(vdelta>0.6)
1145                 ost->sync_opts= lrintf(sync_ipts);
1146         }else if (vdelta > 1.1)
1147             nb_frames = lrintf(vdelta);
1148 //fprintf(stderr, "vdelta:%f, ost->sync_opts:%"PRId64", ost->sync_ipts:%f nb_frames:%d\n", vdelta, ost->sync_opts, get_sync_ipts(ost), nb_frames);
1149         if (nb_frames == 0){
1150             ++nb_frames_drop;
1151             if (verbose>2)
1152                 fprintf(stderr, "*** drop!\n");
1153         }else if (nb_frames > 1) {
1154             nb_frames_dup += nb_frames - 1;
1155             if (verbose>2)
1156                 fprintf(stderr, "*** %d dup!\n", nb_frames-1);
1157         }
1158     }else
1159         ost->sync_opts= lrintf(sync_ipts);
1160
1161     nb_frames= FFMIN(nb_frames, max_frames[AVMEDIA_TYPE_VIDEO] - ost->frame_number);
1162     if (nb_frames <= 0)
1163         return;
1164
1165     formatted_picture = in_picture;
1166     final_picture = formatted_picture;
1167
1168     resample_changed = ost->resample_width   != dec->width  ||
1169                        ost->resample_height  != dec->height ||
1170                        ost->resample_pix_fmt != dec->pix_fmt;
1171
1172     if (resample_changed) {
1173         av_log(NULL, AV_LOG_INFO,
1174                "Input stream #%d.%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1175                ist->file_index, ist->st->index,
1176                ost->resample_width, ost->resample_height, av_get_pix_fmt_name(ost->resample_pix_fmt),
1177                dec->width         , dec->height         , av_get_pix_fmt_name(dec->pix_fmt));
1178         if(!ost->video_resample)
1179             ffmpeg_exit(1);
1180     }
1181
1182 #if !CONFIG_AVFILTER
1183     if (ost->video_resample) {
1184         final_picture = &ost->pict_tmp;
1185         if (resample_changed) {
1186             /* initialize a new scaler context */
1187             sws_freeContext(ost->img_resample_ctx);
1188             ost->img_resample_ctx = sws_getContext(
1189                 ist->st->codec->width,
1190                 ist->st->codec->height,
1191                 ist->st->codec->pix_fmt,
1192                 ost->st->codec->width,
1193                 ost->st->codec->height,
1194                 ost->st->codec->pix_fmt,
1195                 ost->sws_flags, NULL, NULL, NULL);
1196             if (ost->img_resample_ctx == NULL) {
1197                 fprintf(stderr, "Cannot get resampling context\n");
1198                 ffmpeg_exit(1);
1199             }
1200         }
1201         sws_scale(ost->img_resample_ctx, formatted_picture->data, formatted_picture->linesize,
1202               0, ost->resample_height, final_picture->data, final_picture->linesize);
1203     }
1204 #endif
1205
1206     /* duplicates frame if needed */
1207     for(i=0;i<nb_frames;i++) {
1208         AVPacket pkt;
1209         av_init_packet(&pkt);
1210         pkt.stream_index= ost->index;
1211
1212         if (s->oformat->flags & AVFMT_RAWPICTURE) {
1213             /* raw pictures are written as AVPicture structure to
1214                avoid any copies. We support temorarily the older
1215                method. */
1216             AVFrame* old_frame = enc->coded_frame;
1217             enc->coded_frame = dec->coded_frame; //FIXME/XXX remove this hack
1218             pkt.data= (uint8_t *)final_picture;
1219             pkt.size=  sizeof(AVPicture);
1220             pkt.pts= av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
1221             pkt.flags |= AV_PKT_FLAG_KEY;
1222
1223             write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1224             enc->coded_frame = old_frame;
1225         } else {
1226             AVFrame big_picture;
1227
1228             big_picture= *final_picture;
1229             /* better than nothing: use input picture interlaced
1230                settings */
1231             big_picture.interlaced_frame = in_picture->interlaced_frame;
1232             if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
1233                 if(top_field_first == -1)
1234                     big_picture.top_field_first = in_picture->top_field_first;
1235                 else
1236                     big_picture.top_field_first = top_field_first;
1237             }
1238
1239             /* handles sameq here. This is not correct because it may
1240                not be a global option */
1241             big_picture.quality = same_quality ? ist->st->quality : ost->st->quality;
1242             if(!me_threshold)
1243                 big_picture.pict_type = 0;
1244 //            big_picture.pts = AV_NOPTS_VALUE;
1245             big_picture.pts= ost->sync_opts;
1246 //            big_picture.pts= av_rescale(ost->sync_opts, AV_TIME_BASE*(int64_t)enc->time_base.num, enc->time_base.den);
1247 //av_log(NULL, AV_LOG_DEBUG, "%"PRId64" -> encoder\n", ost->sync_opts);
1248             if (ost->forced_kf_index < ost->forced_kf_count &&
1249                 big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1250                 big_picture.pict_type = AV_PICTURE_TYPE_I;
1251                 ost->forced_kf_index++;
1252             }
1253             ret = avcodec_encode_video(enc,
1254                                        bit_buffer, bit_buffer_size,
1255                                        &big_picture);
1256             if (ret < 0) {
1257                 fprintf(stderr, "Video encoding failed\n");
1258                 ffmpeg_exit(1);
1259             }
1260
1261             if(ret>0){
1262                 pkt.data= bit_buffer;
1263                 pkt.size= ret;
1264                 if(enc->coded_frame->pts != AV_NOPTS_VALUE)
1265                     pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1266 /*av_log(NULL, AV_LOG_DEBUG, "encoder -> %"PRId64"/%"PRId64"\n",
1267    pkt.pts != AV_NOPTS_VALUE ? av_rescale(pkt.pts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1,
1268    pkt.dts != AV_NOPTS_VALUE ? av_rescale(pkt.dts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1);*/
1269
1270                 if(enc->coded_frame->key_frame)
1271                     pkt.flags |= AV_PKT_FLAG_KEY;
1272                 write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1273                 *frame_size = ret;
1274                 video_size += ret;
1275                 //fprintf(stderr,"\nFrame: %3d size: %5d type: %d",
1276                 //        enc->frame_number-1, ret, enc->pict_type);
1277                 /* if two pass, output log */
1278                 if (ost->logfile && enc->stats_out) {
1279                     fprintf(ost->logfile, "%s", enc->stats_out);
1280                 }
1281             }
1282         }
1283         ost->sync_opts++;
1284         ost->frame_number++;
1285     }
1286 }
1287
1288 static double psnr(double d){
1289     return -10.0*log(d)/log(10.0);
1290 }
1291
1292 static void do_video_stats(AVFormatContext *os, AVOutputStream *ost,
1293                            int frame_size)
1294 {
1295     AVCodecContext *enc;
1296     int frame_number;
1297     double ti1, bitrate, avg_bitrate;
1298
1299     /* this is executed just the first time do_video_stats is called */
1300     if (!vstats_file) {
1301         vstats_file = fopen(vstats_filename, "w");
1302         if (!vstats_file) {
1303             perror("fopen");
1304             ffmpeg_exit(1);
1305         }
1306     }
1307
1308     enc = ost->st->codec;
1309     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1310         frame_number = ost->frame_number;
1311         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality/(float)FF_QP2LAMBDA);
1312         if (enc->flags&CODEC_FLAG_PSNR)
1313             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0]/(enc->width*enc->height*255.0*255.0)));
1314
1315         fprintf(vstats_file,"f_size= %6d ", frame_size);
1316         /* compute pts value */
1317         ti1 = ost->sync_opts * av_q2d(enc->time_base);
1318         if (ti1 < 0.01)
1319             ti1 = 0.01;
1320
1321         bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1322         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1323         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1324             (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1325         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1326     }
1327 }
1328
1329 static void print_report(AVFormatContext **output_files,
1330                          AVOutputStream **ost_table, int nb_ostreams,
1331                          int is_last_report)
1332 {
1333     char buf[1024];
1334     AVOutputStream *ost;
1335     AVFormatContext *oc;
1336     int64_t total_size;
1337     AVCodecContext *enc;
1338     int frame_number, vid, i;
1339     double bitrate, ti1, pts;
1340     static int64_t last_time = -1;
1341     static int qp_histogram[52];
1342
1343     if (!is_last_report) {
1344         int64_t cur_time;
1345         /* display the report every 0.5 seconds */
1346         cur_time = av_gettime();
1347         if (last_time == -1) {
1348             last_time = cur_time;
1349             return;
1350         }
1351         if ((cur_time - last_time) < 500000)
1352             return;
1353         last_time = cur_time;
1354     }
1355
1356
1357     oc = output_files[0];
1358
1359     total_size = avio_size(oc->pb);
1360     if(total_size<0) // FIXME improve avio_size() so it works with non seekable output too
1361         total_size= avio_tell(oc->pb);
1362
1363     buf[0] = '\0';
1364     ti1 = 1e10;
1365     vid = 0;
1366     for(i=0;i<nb_ostreams;i++) {
1367         float q = -1;
1368         ost = ost_table[i];
1369         enc = ost->st->codec;
1370         if (!ost->st->stream_copy && enc->coded_frame)
1371             q = enc->coded_frame->quality/(float)FF_QP2LAMBDA;
1372         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1373             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1374         }
1375         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1376             float t = (av_gettime()-timer_start) / 1000000.0;
1377
1378             frame_number = ost->frame_number;
1379             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
1380                      frame_number, (t>1)?(int)(frame_number/t+0.5) : 0, q);
1381             if(is_last_report)
1382                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1383             if(qp_hist){
1384                 int j;
1385                 int qp = lrintf(q);
1386                 if(qp>=0 && qp<FF_ARRAY_ELEMS(qp_histogram))
1387                     qp_histogram[qp]++;
1388                 for(j=0; j<32; j++)
1389                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j]+1)/log(2)));
1390             }
1391             if (enc->flags&CODEC_FLAG_PSNR){
1392                 int j;
1393                 double error, error_sum=0;
1394                 double scale, scale_sum=0;
1395                 char type[3]= {'Y','U','V'};
1396                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1397                 for(j=0; j<3; j++){
1398                     if(is_last_report){
1399                         error= enc->error[j];
1400                         scale= enc->width*enc->height*255.0*255.0*frame_number;
1401                     }else{
1402                         error= enc->coded_frame->error[j];
1403                         scale= enc->width*enc->height*255.0*255.0;
1404                     }
1405                     if(j) scale/=4;
1406                     error_sum += error;
1407                     scale_sum += scale;
1408                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error/scale));
1409                 }
1410                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum/scale_sum));
1411             }
1412             vid = 1;
1413         }
1414         /* compute min output value */
1415         pts = (double)ost->st->pts.val * av_q2d(ost->st->time_base);
1416         if ((pts < ti1) && (pts > 0))
1417             ti1 = pts;
1418     }
1419     if (ti1 < 0.01)
1420         ti1 = 0.01;
1421
1422     if (verbose > 0 || is_last_report) {
1423         bitrate = (double)(total_size * 8) / ti1 / 1000.0;
1424
1425         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1426             "size=%8.0fkB time=%0.2f bitrate=%6.1fkbits/s",
1427             (double)total_size / 1024, ti1, bitrate);
1428
1429         if (nb_frames_dup || nb_frames_drop)
1430           snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1431                   nb_frames_dup, nb_frames_drop);
1432
1433         if (verbose >= 0)
1434             fprintf(stderr, "%s    \r", buf);
1435
1436         fflush(stderr);
1437     }
1438
1439     if (is_last_report && verbose >= 0){
1440         int64_t raw= audio_size + video_size + extra_size;
1441         fprintf(stderr, "\n");
1442         fprintf(stderr, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
1443                 video_size/1024.0,
1444                 audio_size/1024.0,
1445                 extra_size/1024.0,
1446                 100.0*(total_size - raw)/raw
1447         );
1448     }
1449 }
1450
1451 static void generate_silence(uint8_t* buf, enum AVSampleFormat sample_fmt, size_t size)
1452 {
1453     int fill_char = 0x00;
1454     if (sample_fmt == AV_SAMPLE_FMT_U8)
1455         fill_char = 0x80;
1456     memset(buf, fill_char, size);
1457 }
1458
1459 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1460 static int output_packet(AVInputStream *ist, int ist_index,
1461                          AVOutputStream **ost_table, int nb_ostreams,
1462                          const AVPacket *pkt)
1463 {
1464     AVFormatContext *os;
1465     AVOutputStream *ost;
1466     int ret, i;
1467     int got_output;
1468     AVFrame picture;
1469     void *buffer_to_free = NULL;
1470     static unsigned int samples_size= 0;
1471     AVSubtitle subtitle, *subtitle_to_free;
1472     int64_t pkt_pts = AV_NOPTS_VALUE;
1473 #if CONFIG_AVFILTER
1474     int frame_available;
1475 #endif
1476
1477     AVPacket avpkt;
1478     int bps = av_get_bits_per_sample_fmt(ist->st->codec->sample_fmt)>>3;
1479
1480     if(ist->next_pts == AV_NOPTS_VALUE)
1481         ist->next_pts= ist->pts;
1482
1483     if (pkt == NULL) {
1484         /* EOF handling */
1485         av_init_packet(&avpkt);
1486         avpkt.data = NULL;
1487         avpkt.size = 0;
1488         goto handle_eof;
1489     } else {
1490         avpkt = *pkt;
1491     }
1492
1493     if(pkt->dts != AV_NOPTS_VALUE)
1494         ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1495     if(pkt->pts != AV_NOPTS_VALUE)
1496         pkt_pts = av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1497
1498     //while we have more to decode or while the decoder did output something on EOF
1499     while (avpkt.size > 0 || (!pkt && got_output)) {
1500         uint8_t *data_buf, *decoded_data_buf;
1501         int data_size, decoded_data_size;
1502     handle_eof:
1503         ist->pts= ist->next_pts;
1504
1505         if(avpkt.size && avpkt.size != pkt->size &&
1506            ((!ist->showed_multi_packet_warning && verbose>0) || verbose>1)){
1507             fprintf(stderr, "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1508             ist->showed_multi_packet_warning=1;
1509         }
1510
1511         /* decode the packet if needed */
1512         decoded_data_buf = NULL; /* fail safe */
1513         decoded_data_size= 0;
1514         data_buf  = avpkt.data;
1515         data_size = avpkt.size;
1516         subtitle_to_free = NULL;
1517         if (ist->decoding_needed) {
1518             switch(ist->st->codec->codec_type) {
1519             case AVMEDIA_TYPE_AUDIO:{
1520                 if(pkt && samples_size < FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE)) {
1521                     samples_size = FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE);
1522                     av_free(samples);
1523                     samples= av_malloc(samples_size);
1524                 }
1525                 decoded_data_size= samples_size;
1526                     /* XXX: could avoid copy if PCM 16 bits with same
1527                        endianness as CPU */
1528                 ret = avcodec_decode_audio3(ist->st->codec, samples, &decoded_data_size,
1529                                             &avpkt);
1530                 if (ret < 0)
1531                     goto fail_decode;
1532                 avpkt.data += ret;
1533                 avpkt.size -= ret;
1534                 data_size   = ret;
1535                 got_output  = decoded_data_size > 0;
1536                 /* Some bug in mpeg audio decoder gives */
1537                 /* decoded_data_size < 0, it seems they are overflows */
1538                 if (!got_output) {
1539                     /* no audio frame */
1540                     continue;
1541                 }
1542                 decoded_data_buf = (uint8_t *)samples;
1543                 ist->next_pts += ((int64_t)AV_TIME_BASE/bps * decoded_data_size) /
1544                     (ist->st->codec->sample_rate * ist->st->codec->channels);
1545                 break;}
1546             case AVMEDIA_TYPE_VIDEO:
1547                     decoded_data_size = (ist->st->codec->width * ist->st->codec->height * 3) / 2;
1548                     /* XXX: allocate picture correctly */
1549                     avcodec_get_frame_defaults(&picture);
1550                     avpkt.pts = pkt_pts;
1551                     avpkt.dts = ist->pts;
1552                     pkt_pts = AV_NOPTS_VALUE;
1553
1554                     ret = avcodec_decode_video2(ist->st->codec,
1555                                                 &picture, &got_output, &avpkt);
1556                     ist->st->quality= picture.quality;
1557                     if (ret < 0)
1558                         goto fail_decode;
1559                     if (!got_output) {
1560                         /* no picture yet */
1561                         goto discard_packet;
1562                     }
1563                     ist->next_pts = ist->pts = guess_correct_pts(&ist->pts_ctx, picture.pkt_pts, picture.pkt_dts);
1564                     if (ist->st->codec->time_base.num != 0) {
1565                         int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1566                         ist->next_pts += ((int64_t)AV_TIME_BASE *
1567                                           ist->st->codec->time_base.num * ticks) /
1568                             ist->st->codec->time_base.den;
1569                     }
1570                     avpkt.size = 0;
1571                     buffer_to_free = NULL;
1572                     pre_process_video_frame(ist, (AVPicture *)&picture, &buffer_to_free);
1573                     break;
1574             case AVMEDIA_TYPE_SUBTITLE:
1575                 ret = avcodec_decode_subtitle2(ist->st->codec,
1576                                                &subtitle, &got_output, &avpkt);
1577                 if (ret < 0)
1578                     goto fail_decode;
1579                 if (!got_output) {
1580                     goto discard_packet;
1581                 }
1582                 subtitle_to_free = &subtitle;
1583                 avpkt.size = 0;
1584                 break;
1585             default:
1586                 goto fail_decode;
1587             }
1588         } else {
1589             switch(ist->st->codec->codec_type) {
1590             case AVMEDIA_TYPE_AUDIO:
1591                 ist->next_pts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1592                     ist->st->codec->sample_rate;
1593                 break;
1594             case AVMEDIA_TYPE_VIDEO:
1595                 if (ist->st->codec->time_base.num != 0) {
1596                     int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1597                     ist->next_pts += ((int64_t)AV_TIME_BASE *
1598                                       ist->st->codec->time_base.num * ticks) /
1599                         ist->st->codec->time_base.den;
1600                 }
1601                 break;
1602             }
1603             ret = avpkt.size;
1604             avpkt.size = 0;
1605         }
1606
1607 #if CONFIG_AVFILTER
1608         if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1609             for (i = 0; i < nb_ostreams; i++) {
1610                 ost = ost_table[i];
1611                 if (ost->input_video_filter && ost->source_index == ist_index) {
1612                     AVRational sar;
1613                     if (ist->st->sample_aspect_ratio.num)
1614                         sar = ist->st->sample_aspect_ratio;
1615                     else
1616                         sar = ist->st->codec->sample_aspect_ratio;
1617                     // add it to be filtered
1618                     av_vsrc_buffer_add_frame(ost->input_video_filter, &picture,
1619                                              ist->pts,
1620                                              sar);
1621                 }
1622             }
1623         }
1624 #endif
1625
1626         // preprocess audio (volume)
1627         if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1628             if (audio_volume != 256) {
1629                 short *volp;
1630                 volp = samples;
1631                 for(i=0;i<(decoded_data_size / sizeof(short));i++) {
1632                     int v = ((*volp) * audio_volume + 128) >> 8;
1633                     if (v < -32768) v = -32768;
1634                     if (v >  32767) v = 32767;
1635                     *volp++ = v;
1636                 }
1637             }
1638         }
1639
1640         /* frame rate emulation */
1641         if (rate_emu) {
1642             int64_t pts = av_rescale(ist->pts, 1000000, AV_TIME_BASE);
1643             int64_t now = av_gettime() - ist->start;
1644             if (pts > now)
1645                 usleep(pts - now);
1646         }
1647         /* if output time reached then transcode raw format,
1648            encode packets and output them */
1649         if (start_time == 0 || ist->pts >= start_time)
1650             for(i=0;i<nb_ostreams;i++) {
1651                 int frame_size;
1652
1653                 ost = ost_table[i];
1654                 if (ost->source_index == ist_index) {
1655 #if CONFIG_AVFILTER
1656                 frame_available = ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO ||
1657                     !ost->output_video_filter || avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1658                 while (frame_available) {
1659                     AVRational ist_pts_tb;
1660                     if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && ost->output_video_filter)
1661                         get_filtered_video_frame(ost->output_video_filter, &picture, &ost->picref, &ist_pts_tb);
1662                     if (ost->picref)
1663                         ist->pts = av_rescale_q(ost->picref->pts, ist_pts_tb, AV_TIME_BASE_Q);
1664 #endif
1665                     os = output_files[ost->file_index];
1666
1667                     /* set the input output pts pairs */
1668                     //ost->sync_ipts = (double)(ist->pts + input_files_ts_offset[ist->file_index] - start_time)/ AV_TIME_BASE;
1669
1670                     if (ost->encoding_needed) {
1671                         av_assert0(ist->decoding_needed);
1672                         switch(ost->st->codec->codec_type) {
1673                         case AVMEDIA_TYPE_AUDIO:
1674                             do_audio_out(os, ost, ist, decoded_data_buf, decoded_data_size);
1675                             break;
1676                         case AVMEDIA_TYPE_VIDEO:
1677 #if CONFIG_AVFILTER
1678                             if (ost->picref->video && !ost->frame_aspect_ratio)
1679                                 ost->st->codec->sample_aspect_ratio = ost->picref->video->pixel_aspect;
1680 #endif
1681                             do_video_out(os, ost, ist, &picture, &frame_size);
1682                             if (vstats_filename && frame_size)
1683                                 do_video_stats(os, ost, frame_size);
1684                             break;
1685                         case AVMEDIA_TYPE_SUBTITLE:
1686                             do_subtitle_out(os, ost, ist, &subtitle,
1687                                             pkt->pts);
1688                             break;
1689                         default:
1690                             abort();
1691                         }
1692                     } else {
1693                         AVFrame avframe; //FIXME/XXX remove this
1694                         AVPacket opkt;
1695                         int64_t ost_tb_start_time= av_rescale_q(start_time, AV_TIME_BASE_Q, ost->st->time_base);
1696
1697                         av_init_packet(&opkt);
1698
1699                         if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) && !copy_initial_nonkeyframes)
1700 #if !CONFIG_AVFILTER
1701                             continue;
1702 #else
1703                             goto cont;
1704 #endif
1705
1706                         /* no reencoding needed : output the packet directly */
1707                         /* force the input stream PTS */
1708
1709                         avcodec_get_frame_defaults(&avframe);
1710                         ost->st->codec->coded_frame= &avframe;
1711                         avframe.key_frame = pkt->flags & AV_PKT_FLAG_KEY;
1712
1713                         if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1714                             audio_size += data_size;
1715                         else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1716                             video_size += data_size;
1717                             ost->sync_opts++;
1718                         }
1719
1720                         opkt.stream_index= ost->index;
1721                         if(pkt->pts != AV_NOPTS_VALUE)
1722                             opkt.pts= av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1723                         else
1724                             opkt.pts= AV_NOPTS_VALUE;
1725
1726                         if (pkt->dts == AV_NOPTS_VALUE)
1727                             opkt.dts = av_rescale_q(ist->pts, AV_TIME_BASE_Q, ost->st->time_base);
1728                         else
1729                             opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1730                         opkt.dts -= ost_tb_start_time;
1731
1732                         opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1733                         opkt.flags= pkt->flags;
1734
1735                         //FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1736                         if(   ost->st->codec->codec_id != CODEC_ID_H264
1737                            && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
1738                            && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
1739                            ) {
1740                             if(av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, data_buf, data_size, pkt->flags & AV_PKT_FLAG_KEY))
1741                                 opkt.destruct= av_destruct_packet;
1742                         } else {
1743                             opkt.data = data_buf;
1744                             opkt.size = data_size;
1745                         }
1746
1747                         write_frame(os, &opkt, ost->st->codec, ost->bitstream_filters);
1748                         ost->st->codec->frame_number++;
1749                         ost->frame_number++;
1750                         av_free_packet(&opkt);
1751                     }
1752 #if CONFIG_AVFILTER
1753                     cont:
1754                     frame_available = (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) &&
1755                                        ost->output_video_filter && avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1756                     if (ost->picref)
1757                         avfilter_unref_buffer(ost->picref);
1758                 }
1759 #endif
1760                 }
1761             }
1762
1763         av_free(buffer_to_free);
1764         /* XXX: allocate the subtitles in the codec ? */
1765         if (subtitle_to_free) {
1766             avsubtitle_free(subtitle_to_free);
1767             subtitle_to_free = NULL;
1768         }
1769     }
1770  discard_packet:
1771     if (pkt == NULL) {
1772         /* EOF handling */
1773
1774         for(i=0;i<nb_ostreams;i++) {
1775             ost = ost_table[i];
1776             if (ost->source_index == ist_index) {
1777                 AVCodecContext *enc= ost->st->codec;
1778                 os = output_files[ost->file_index];
1779
1780                 if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <=1)
1781                     continue;
1782                 if(ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE))
1783                     continue;
1784
1785                 if (ost->encoding_needed) {
1786                     for(;;) {
1787                         AVPacket pkt;
1788                         int fifo_bytes;
1789                         av_init_packet(&pkt);
1790                         pkt.stream_index= ost->index;
1791
1792                         switch(ost->st->codec->codec_type) {
1793                         case AVMEDIA_TYPE_AUDIO:
1794                             fifo_bytes = av_fifo_size(ost->fifo);
1795                             ret = 0;
1796                             /* encode any samples remaining in fifo */
1797                             if (fifo_bytes > 0) {
1798                                 int osize = av_get_bits_per_sample_fmt(enc->sample_fmt) >> 3;
1799                                 int fs_tmp = enc->frame_size;
1800
1801                                 av_fifo_generic_read(ost->fifo, audio_buf, fifo_bytes, NULL);
1802                                 if (enc->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1803                                     enc->frame_size = fifo_bytes / (osize * enc->channels);
1804                                 } else { /* pad */
1805                                     int frame_bytes = enc->frame_size*osize*enc->channels;
1806                                     if (allocated_audio_buf_size < frame_bytes)
1807                                         ffmpeg_exit(1);
1808                                     generate_silence(audio_buf+fifo_bytes, enc->sample_fmt, frame_bytes - fifo_bytes);
1809                                 }
1810
1811                                 ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, (short *)audio_buf);
1812                                 pkt.duration = av_rescale((int64_t)enc->frame_size*ost->st->time_base.den,
1813                                                           ost->st->time_base.num, enc->sample_rate);
1814                                 enc->frame_size = fs_tmp;
1815                             }
1816                             if(ret <= 0) {
1817                                 ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, NULL);
1818                             }
1819                             if (ret < 0) {
1820                                 fprintf(stderr, "Audio encoding failed\n");
1821                                 ffmpeg_exit(1);
1822                             }
1823                             audio_size += ret;
1824                             pkt.flags |= AV_PKT_FLAG_KEY;
1825                             break;
1826                         case AVMEDIA_TYPE_VIDEO:
1827                             ret = avcodec_encode_video(enc, bit_buffer, bit_buffer_size, NULL);
1828                             if (ret < 0) {
1829                                 fprintf(stderr, "Video encoding failed\n");
1830                                 ffmpeg_exit(1);
1831                             }
1832                             video_size += ret;
1833                             if(enc->coded_frame && enc->coded_frame->key_frame)
1834                                 pkt.flags |= AV_PKT_FLAG_KEY;
1835                             if (ost->logfile && enc->stats_out) {
1836                                 fprintf(ost->logfile, "%s", enc->stats_out);
1837                             }
1838                             break;
1839                         default:
1840                             ret=-1;
1841                         }
1842
1843                         if(ret<=0)
1844                             break;
1845                         pkt.data= bit_buffer;
1846                         pkt.size= ret;
1847                         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1848                             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1849                         write_frame(os, &pkt, ost->st->codec, ost->bitstream_filters);
1850                     }
1851                 }
1852             }
1853         }
1854     }
1855
1856     return 0;
1857  fail_decode:
1858     return -1;
1859 }
1860
1861 static void print_sdp(AVFormatContext **avc, int n)
1862 {
1863     char sdp[2048];
1864
1865     av_sdp_create(avc, n, sdp, sizeof(sdp));
1866     printf("SDP:\n%s\n", sdp);
1867     fflush(stdout);
1868 }
1869
1870 static int copy_chapters(int infile, int outfile)
1871 {
1872     AVFormatContext *is = input_files[infile].ctx;
1873     AVFormatContext *os = output_files[outfile];
1874     int i;
1875
1876     for (i = 0; i < is->nb_chapters; i++) {
1877         AVChapter *in_ch = is->chapters[i], *out_ch;
1878         int64_t ts_off   = av_rescale_q(start_time - input_files_ts_offset[infile],
1879                                       AV_TIME_BASE_Q, in_ch->time_base);
1880         int64_t rt       = (recording_time == INT64_MAX) ? INT64_MAX :
1881                            av_rescale_q(recording_time, AV_TIME_BASE_Q, in_ch->time_base);
1882
1883
1884         if (in_ch->end < ts_off)
1885             continue;
1886         if (rt != INT64_MAX && in_ch->start > rt + ts_off)
1887             break;
1888
1889         out_ch = av_mallocz(sizeof(AVChapter));
1890         if (!out_ch)
1891             return AVERROR(ENOMEM);
1892
1893         out_ch->id        = in_ch->id;
1894         out_ch->time_base = in_ch->time_base;
1895         out_ch->start     = FFMAX(0,  in_ch->start - ts_off);
1896         out_ch->end       = FFMIN(rt, in_ch->end   - ts_off);
1897
1898         if (metadata_chapters_autocopy)
1899             av_dict_copy(&out_ch->metadata, in_ch->metadata, 0);
1900
1901         os->nb_chapters++;
1902         os->chapters = av_realloc(os->chapters, sizeof(AVChapter)*os->nb_chapters);
1903         if (!os->chapters)
1904             return AVERROR(ENOMEM);
1905         os->chapters[os->nb_chapters - 1] = out_ch;
1906     }
1907     return 0;
1908 }
1909
1910 static void parse_forced_key_frames(char *kf, AVOutputStream *ost,
1911                                     AVCodecContext *avctx)
1912 {
1913     char *p;
1914     int n = 1, i;
1915     int64_t t;
1916
1917     for (p = kf; *p; p++)
1918         if (*p == ',')
1919             n++;
1920     ost->forced_kf_count = n;
1921     ost->forced_kf_pts = av_malloc(sizeof(*ost->forced_kf_pts) * n);
1922     if (!ost->forced_kf_pts) {
1923         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
1924         ffmpeg_exit(1);
1925     }
1926     for (i = 0; i < n; i++) {
1927         p = i ? strchr(p, ',') + 1 : kf;
1928         t = parse_time_or_die("force_key_frames", p, 1);
1929         ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
1930     }
1931 }
1932
1933 /*
1934  * The following code is the main loop of the file converter
1935  */
1936 static int transcode(AVFormatContext **output_files,
1937                      int nb_output_files,
1938                      AVInputFile *input_files,
1939                      int nb_input_files,
1940                      AVStreamMap *stream_maps, int nb_stream_maps)
1941 {
1942     int ret = 0, i, j, k, n, nb_ostreams = 0;
1943     AVFormatContext *is, *os;
1944     AVCodecContext *codec, *icodec;
1945     AVOutputStream *ost, **ost_table = NULL;
1946     AVInputStream *ist;
1947     char error[1024];
1948     int want_sdp = 1;
1949     uint8_t no_packet[MAX_FILES]={0};
1950     int no_packet_count=0;
1951
1952     if (rate_emu)
1953         for (i = 0; i < nb_input_streams; i++)
1954             input_streams[i].start = av_gettime();
1955
1956     /* output stream init */
1957     nb_ostreams = 0;
1958     for(i=0;i<nb_output_files;i++) {
1959         os = output_files[i];
1960         if (!os->nb_streams && !(os->oformat->flags & AVFMT_NOSTREAMS)) {
1961             av_dump_format(output_files[i], i, output_files[i]->filename, 1);
1962             fprintf(stderr, "Output file #%d does not contain any stream\n", i);
1963             ret = AVERROR(EINVAL);
1964             goto fail;
1965         }
1966         nb_ostreams += os->nb_streams;
1967     }
1968     if (nb_stream_maps > 0 && nb_stream_maps != nb_ostreams) {
1969         fprintf(stderr, "Number of stream maps must match number of output streams\n");
1970         ret = AVERROR(EINVAL);
1971         goto fail;
1972     }
1973
1974     /* Sanity check the mapping args -- do the input files & streams exist? */
1975     for(i=0;i<nb_stream_maps;i++) {
1976         int fi = stream_maps[i].file_index;
1977         int si = stream_maps[i].stream_index;
1978
1979         if (fi < 0 || fi > nb_input_files - 1 ||
1980             si < 0 || si > input_files[fi].ctx->nb_streams - 1) {
1981             fprintf(stderr,"Could not find input stream #%d.%d\n", fi, si);
1982             ret = AVERROR(EINVAL);
1983             goto fail;
1984         }
1985         fi = stream_maps[i].sync_file_index;
1986         si = stream_maps[i].sync_stream_index;
1987         if (fi < 0 || fi > nb_input_files - 1 ||
1988             si < 0 || si > input_files[fi].ctx->nb_streams - 1) {
1989             fprintf(stderr,"Could not find sync stream #%d.%d\n", fi, si);
1990             ret = AVERROR(EINVAL);
1991             goto fail;
1992         }
1993     }
1994
1995     ost_table = av_mallocz(sizeof(AVOutputStream *) * nb_ostreams);
1996     if (!ost_table)
1997         goto fail;
1998     n = 0;
1999     for(k=0;k<nb_output_files;k++) {
2000         os = output_files[k];
2001         for(i=0;i<os->nb_streams;i++,n++) {
2002             int found;
2003             ost = ost_table[n] = output_streams_for_file[k][i];
2004             ost->st = os->streams[i];
2005             if (nb_stream_maps > 0) {
2006                 ost->source_index = input_files[stream_maps[n].file_index].ist_index +
2007                     stream_maps[n].stream_index;
2008
2009                 /* Sanity check that the stream types match */
2010                 if (input_streams[ost->source_index].st->codec->codec_type != ost->st->codec->codec_type) {
2011                     int i= ost->file_index;
2012                     av_dump_format(output_files[i], i, output_files[i]->filename, 1);
2013                     fprintf(stderr, "Codec type mismatch for mapping #%d.%d -> #%d.%d\n",
2014                         stream_maps[n].file_index, stream_maps[n].stream_index,
2015                         ost->file_index, ost->index);
2016                     ffmpeg_exit(1);
2017                 }
2018
2019             } else {
2020                 int best_nb_frames=-1;
2021                 /* get corresponding input stream index : we select the first one with the right type */
2022                 found = 0;
2023                 for (j = 0; j < nb_input_streams; j++) {
2024                     int skip=0;
2025                     ist = &input_streams[j];
2026                     if(opt_programid){
2027                         int pi,si;
2028                         AVFormatContext *f = input_files[ist->file_index].ctx;
2029                         skip=1;
2030                         for(pi=0; pi<f->nb_programs; pi++){
2031                             AVProgram *p= f->programs[pi];
2032                             if(p->id == opt_programid)
2033                                 for(si=0; si<p->nb_stream_indexes; si++){
2034                                     if(f->streams[ p->stream_index[si] ] == ist->st)
2035                                         skip=0;
2036                                 }
2037                         }
2038                     }
2039                     if (ist->discard && ist->st->discard != AVDISCARD_ALL && !skip &&
2040                         ist->st->codec->codec_type == ost->st->codec->codec_type) {
2041                         if(best_nb_frames < ist->st->codec_info_nb_frames){
2042                             best_nb_frames= ist->st->codec_info_nb_frames;
2043                             ost->source_index = j;
2044                             found = 1;
2045                         }
2046                     }
2047                 }
2048
2049                 if (!found) {
2050                     if(! opt_programid) {
2051                         /* try again and reuse existing stream */
2052                         for (j = 0; j < nb_input_streams; j++) {
2053                             ist = &input_streams[j];
2054                             if (   ist->st->codec->codec_type == ost->st->codec->codec_type
2055                                 && ist->st->discard != AVDISCARD_ALL) {
2056                                 ost->source_index = j;
2057                                 found = 1;
2058                             }
2059                         }
2060                     }
2061                     if (!found) {
2062                         int i= ost->file_index;
2063                         av_dump_format(output_files[i], i, output_files[i]->filename, 1);
2064                         fprintf(stderr, "Could not find input stream matching output stream #%d.%d\n",
2065                                 ost->file_index, ost->index);
2066                         ffmpeg_exit(1);
2067                     }
2068                 }
2069             }
2070             ist = &input_streams[ost->source_index];
2071             ist->discard = 0;
2072             ost->sync_ist = (nb_stream_maps > 0) ?
2073                 &input_streams[input_files[stream_maps[n].sync_file_index].ist_index +
2074                          stream_maps[n].sync_stream_index] : ist;
2075         }
2076     }
2077
2078     /* for each output stream, we compute the right encoding parameters */
2079     for(i=0;i<nb_ostreams;i++) {
2080         ost = ost_table[i];
2081         os = output_files[ost->file_index];
2082         ist = &input_streams[ost->source_index];
2083
2084         codec = ost->st->codec;
2085         icodec = ist->st->codec;
2086
2087         if (metadata_streams_autocopy)
2088             av_dict_copy(&ost->st->metadata, ist->st->metadata,
2089                          AV_DICT_DONT_OVERWRITE);
2090
2091         ost->st->disposition = ist->st->disposition;
2092         codec->bits_per_raw_sample= icodec->bits_per_raw_sample;
2093         codec->chroma_sample_location = icodec->chroma_sample_location;
2094
2095         if (ost->st->stream_copy) {
2096             uint64_t extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2097
2098             if (extra_size > INT_MAX)
2099                 goto fail;
2100
2101             /* if stream_copy is selected, no need to decode or encode */
2102             codec->codec_id = icodec->codec_id;
2103             codec->codec_type = icodec->codec_type;
2104
2105             if(!codec->codec_tag){
2106                 if(   !os->oformat->codec_tag
2107                    || av_codec_get_id (os->oformat->codec_tag, icodec->codec_tag) == codec->codec_id
2108                    || av_codec_get_tag(os->oformat->codec_tag, icodec->codec_id) <= 0)
2109                     codec->codec_tag = icodec->codec_tag;
2110             }
2111
2112             codec->bit_rate = icodec->bit_rate;
2113             codec->rc_max_rate    = icodec->rc_max_rate;
2114             codec->rc_buffer_size = icodec->rc_buffer_size;
2115             codec->extradata= av_mallocz(extra_size);
2116             if (!codec->extradata)
2117                 goto fail;
2118             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2119             codec->extradata_size= icodec->extradata_size;
2120             if(!copy_tb && av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base) && av_q2d(ist->st->time_base) < 1.0/500){
2121                 codec->time_base = icodec->time_base;
2122                 codec->time_base.num *= icodec->ticks_per_frame;
2123                 av_reduce(&codec->time_base.num, &codec->time_base.den,
2124                           codec->time_base.num, codec->time_base.den, INT_MAX);
2125             }else
2126                 codec->time_base = ist->st->time_base;
2127             switch(codec->codec_type) {
2128             case AVMEDIA_TYPE_AUDIO:
2129                 if(audio_volume != 256) {
2130                     fprintf(stderr,"-acodec copy and -vol are incompatible (frames are not decoded)\n");
2131                     ffmpeg_exit(1);
2132                 }
2133                 codec->channel_layout = icodec->channel_layout;
2134                 codec->sample_rate = icodec->sample_rate;
2135                 codec->channels = icodec->channels;
2136                 codec->frame_size = icodec->frame_size;
2137                 codec->audio_service_type = icodec->audio_service_type;
2138                 codec->block_align= icodec->block_align;
2139                 if(codec->block_align == 1 && codec->codec_id == CODEC_ID_MP3)
2140                     codec->block_align= 0;
2141                 if(codec->codec_id == CODEC_ID_AC3)
2142                     codec->block_align= 0;
2143                 break;
2144             case AVMEDIA_TYPE_VIDEO:
2145                 codec->pix_fmt = icodec->pix_fmt;
2146                 codec->width = icodec->width;
2147                 codec->height = icodec->height;
2148                 codec->has_b_frames = icodec->has_b_frames;
2149                 if (!codec->sample_aspect_ratio.num) {
2150                     codec->sample_aspect_ratio =
2151                     ost->st->sample_aspect_ratio =
2152                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2153                         ist->st->codec->sample_aspect_ratio.num ?
2154                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2155                 }
2156                 break;
2157             case AVMEDIA_TYPE_SUBTITLE:
2158                 codec->width = icodec->width;
2159                 codec->height = icodec->height;
2160                 break;
2161             case AVMEDIA_TYPE_DATA:
2162                 break;
2163             default:
2164                 abort();
2165             }
2166         } else {
2167             if (!ost->enc)
2168                 ost->enc = avcodec_find_encoder(ost->st->codec->codec_id);
2169             switch(codec->codec_type) {
2170             case AVMEDIA_TYPE_AUDIO:
2171                 ost->fifo= av_fifo_alloc(1024);
2172                 if(!ost->fifo)
2173                     goto fail;
2174                 ost->reformat_pair = MAKE_SFMT_PAIR(AV_SAMPLE_FMT_NONE,AV_SAMPLE_FMT_NONE);
2175                 if (!codec->sample_rate) {
2176                     codec->sample_rate = icodec->sample_rate;
2177                     if (icodec->lowres)
2178                         codec->sample_rate >>= icodec->lowres;
2179                 }
2180                 choose_sample_rate(ost->st, ost->enc);
2181                 codec->time_base = (AVRational){1, codec->sample_rate};
2182                 if (!codec->channels)
2183                     codec->channels = icodec->channels;
2184                 if (av_get_channel_layout_nb_channels(codec->channel_layout) != codec->channels)
2185                     codec->channel_layout = 0;
2186                 ost->audio_resample = codec->sample_rate != icodec->sample_rate || audio_sync_method > 1;
2187                 icodec->request_channels = codec->channels;
2188                 ist->decoding_needed = 1;
2189                 ost->encoding_needed = 1;
2190                 ost->resample_sample_fmt  = icodec->sample_fmt;
2191                 ost->resample_sample_rate = icodec->sample_rate;
2192                 ost->resample_channels    = icodec->channels;
2193                 break;
2194             case AVMEDIA_TYPE_VIDEO:
2195                 if (ost->st->codec->pix_fmt == PIX_FMT_NONE) {
2196                     fprintf(stderr, "Video pixel format is unknown, stream cannot be encoded\n");
2197                     ffmpeg_exit(1);
2198                 }
2199                 ost->video_resample = codec->width   != icodec->width  ||
2200                                       codec->height  != icodec->height ||
2201                                       codec->pix_fmt != icodec->pix_fmt;
2202                 if (ost->video_resample) {
2203 #if !CONFIG_AVFILTER
2204                     avcodec_get_frame_defaults(&ost->pict_tmp);
2205                     if(avpicture_alloc((AVPicture*)&ost->pict_tmp, codec->pix_fmt,
2206                                          codec->width, codec->height)) {
2207                         fprintf(stderr, "Cannot allocate temp picture, check pix fmt\n");
2208                         ffmpeg_exit(1);
2209                     }
2210                     ost->img_resample_ctx = sws_getContext(
2211                         icodec->width,
2212                         icodec->height,
2213                             icodec->pix_fmt,
2214                             codec->width,
2215                             codec->height,
2216                             codec->pix_fmt,
2217                             ost->sws_flags, NULL, NULL, NULL);
2218                     if (ost->img_resample_ctx == NULL) {
2219                         fprintf(stderr, "Cannot get resampling context\n");
2220                         ffmpeg_exit(1);
2221                     }
2222 #endif
2223                     codec->bits_per_raw_sample= 0;
2224                 }
2225                 ost->resample_height = icodec->height;
2226                 ost->resample_width  = icodec->width;
2227                 ost->resample_pix_fmt= icodec->pix_fmt;
2228                 ost->encoding_needed = 1;
2229                 ist->decoding_needed = 1;
2230
2231                 if (!ost->frame_rate.num)
2232                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25,1};
2233                 if (ost->enc && ost->enc->supported_framerates && !force_fps) {
2234                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2235                     ost->frame_rate = ost->enc->supported_framerates[idx];
2236                 }
2237                 codec->time_base = (AVRational){ost->frame_rate.den, ost->frame_rate.num};
2238
2239 #if CONFIG_AVFILTER
2240                 if (configure_video_filters(ist, ost)) {
2241                     fprintf(stderr, "Error opening filters!\n");
2242                     exit(1);
2243                 }
2244 #endif
2245                 break;
2246             case AVMEDIA_TYPE_SUBTITLE:
2247                 ost->encoding_needed = 1;
2248                 ist->decoding_needed = 1;
2249                 break;
2250             default:
2251                 abort();
2252                 break;
2253             }
2254             /* two pass mode */
2255             if (ost->encoding_needed &&
2256                 (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
2257                 char logfilename[1024];
2258                 FILE *f;
2259
2260                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2261                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
2262                          i);
2263                 if (codec->flags & CODEC_FLAG_PASS1) {
2264                     f = fopen(logfilename, "wb");
2265                     if (!f) {
2266                         fprintf(stderr, "Cannot write log file '%s' for pass-1 encoding: %s\n", logfilename, strerror(errno));
2267                         ffmpeg_exit(1);
2268                     }
2269                     ost->logfile = f;
2270                 } else {
2271                     char  *logbuffer;
2272                     size_t logbuffer_size;
2273                     if (read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2274                         fprintf(stderr, "Error reading log file '%s' for pass-2 encoding\n", logfilename);
2275                         ffmpeg_exit(1);
2276                     }
2277                     codec->stats_in = logbuffer;
2278                 }
2279             }
2280         }
2281         if(codec->codec_type == AVMEDIA_TYPE_VIDEO){
2282             int size= codec->width * codec->height;
2283             bit_buffer_size= FFMAX(bit_buffer_size, 6*size + 200);
2284         }
2285     }
2286
2287     if (!bit_buffer)
2288         bit_buffer = av_malloc(bit_buffer_size);
2289     if (!bit_buffer) {
2290         fprintf(stderr, "Cannot allocate %d bytes output buffer\n",
2291                 bit_buffer_size);
2292         ret = AVERROR(ENOMEM);
2293         goto fail;
2294     }
2295
2296     /* open each encoder */
2297     for(i=0;i<nb_ostreams;i++) {
2298         ost = ost_table[i];
2299         if (ost->encoding_needed) {
2300             AVCodec *codec = ost->enc;
2301             AVCodecContext *dec = input_streams[ost->source_index].st->codec;
2302             if (!codec) {
2303                 snprintf(error, sizeof(error), "Encoder (codec id %d) not found for output stream #%d.%d",
2304                          ost->st->codec->codec_id, ost->file_index, ost->index);
2305                 ret = AVERROR(EINVAL);
2306                 goto dump_format;
2307             }
2308             if (dec->subtitle_header) {
2309                 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
2310                 if (!ost->st->codec->subtitle_header) {
2311                     ret = AVERROR(ENOMEM);
2312                     goto dump_format;
2313                 }
2314                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2315                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2316             }
2317             if (avcodec_open(ost->st->codec, codec) < 0) {
2318                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d.%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2319                         ost->file_index, ost->index);
2320                 ret = AVERROR(EINVAL);
2321                 goto dump_format;
2322             }
2323             extra_size += ost->st->codec->extradata_size;
2324         }
2325     }
2326
2327     /* open each decoder */
2328     for (i = 0; i < nb_input_streams; i++) {
2329         ist = &input_streams[i];
2330         if (ist->decoding_needed) {
2331             AVCodec *codec = i < nb_input_codecs ? input_codecs[i] : NULL;
2332             if (!codec)
2333                 codec = avcodec_find_decoder(ist->st->codec->codec_id);
2334             if (!codec) {
2335                 snprintf(error, sizeof(error), "Decoder (codec id %d) not found for input stream #%d.%d",
2336                         ist->st->codec->codec_id, ist->file_index, ist->st->index);
2337                 ret = AVERROR(EINVAL);
2338                 goto dump_format;
2339             }
2340
2341             /* update requested sample format for the decoder based on the
2342                corresponding encoder sample format */
2343             for (j = 0; j < nb_ostreams; j++) {
2344                 ost = ost_table[j];
2345                 if (ost->source_index == i) {
2346                     update_sample_fmt(ist->st->codec, codec, ost->st->codec);
2347                     break;
2348                 }
2349             }
2350
2351             if (avcodec_open(ist->st->codec, codec) < 0) {
2352                 snprintf(error, sizeof(error), "Error while opening decoder for input stream #%d.%d",
2353                         ist->file_index, ist->st->index);
2354                 ret = AVERROR(EINVAL);
2355                 goto dump_format;
2356             }
2357             //if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2358             //    ist->st->codec->flags |= CODEC_FLAG_REPEAT_FIELD;
2359         }
2360     }
2361
2362     /* init pts */
2363     for (i = 0; i < nb_input_streams; i++) {
2364         AVStream *st;
2365         ist = &input_streams[i];
2366         st= ist->st;
2367         ist->pts = st->avg_frame_rate.num ? - st->codec->has_b_frames*AV_TIME_BASE / av_q2d(st->avg_frame_rate) : 0;
2368         ist->next_pts = AV_NOPTS_VALUE;
2369         init_pts_correction(&ist->pts_ctx);
2370         ist->is_start = 1;
2371     }
2372
2373     /* set meta data information from input file if required */
2374     for (i=0;i<nb_meta_data_maps;i++) {
2375         AVFormatContext *files[2];
2376         AVDictionary    **meta[2];
2377         int j;
2378
2379 #define METADATA_CHECK_INDEX(index, nb_elems, desc)\
2380         if ((index) < 0 || (index) >= (nb_elems)) {\
2381             snprintf(error, sizeof(error), "Invalid %s index %d while processing metadata maps\n",\
2382                      (desc), (index));\
2383             ret = AVERROR(EINVAL);\
2384             goto dump_format;\
2385         }
2386
2387         int out_file_index = meta_data_maps[i][0].file;
2388         int in_file_index = meta_data_maps[i][1].file;
2389         if (in_file_index < 0 || out_file_index < 0)
2390             continue;
2391         METADATA_CHECK_INDEX(out_file_index, nb_output_files, "output file")
2392         METADATA_CHECK_INDEX(in_file_index, nb_input_files, "input file")
2393
2394         files[0] = output_files[out_file_index];
2395         files[1] = input_files[in_file_index].ctx;
2396
2397         for (j = 0; j < 2; j++) {
2398             AVMetaDataMap *map = &meta_data_maps[i][j];
2399
2400             switch (map->type) {
2401             case 'g':
2402                 meta[j] = &files[j]->metadata;
2403                 break;
2404             case 's':
2405                 METADATA_CHECK_INDEX(map->index, files[j]->nb_streams, "stream")
2406                 meta[j] = &files[j]->streams[map->index]->metadata;
2407                 break;
2408             case 'c':
2409                 METADATA_CHECK_INDEX(map->index, files[j]->nb_chapters, "chapter")
2410                 meta[j] = &files[j]->chapters[map->index]->metadata;
2411                 break;
2412             case 'p':
2413                 METADATA_CHECK_INDEX(map->index, files[j]->nb_programs, "program")
2414                 meta[j] = &files[j]->programs[map->index]->metadata;
2415                 break;
2416             }
2417         }
2418
2419         av_dict_copy(meta[0], *meta[1], AV_DICT_DONT_OVERWRITE);
2420     }
2421
2422     /* copy global metadata by default */
2423     if (metadata_global_autocopy) {
2424
2425         for (i = 0; i < nb_output_files; i++)
2426             av_dict_copy(&output_files[i]->metadata, input_files[0].ctx->metadata,
2427                          AV_DICT_DONT_OVERWRITE);
2428     }
2429
2430     /* copy chapters according to chapter maps */
2431     for (i = 0; i < nb_chapter_maps; i++) {
2432         int infile  = chapter_maps[i].in_file;
2433         int outfile = chapter_maps[i].out_file;
2434
2435         if (infile < 0 || outfile < 0)
2436             continue;
2437         if (infile >= nb_input_files) {
2438             snprintf(error, sizeof(error), "Invalid input file index %d in chapter mapping.\n", infile);
2439             ret = AVERROR(EINVAL);
2440             goto dump_format;
2441         }
2442         if (outfile >= nb_output_files) {
2443             snprintf(error, sizeof(error), "Invalid output file index %d in chapter mapping.\n",outfile);
2444             ret = AVERROR(EINVAL);
2445             goto dump_format;
2446         }
2447         copy_chapters(infile, outfile);
2448     }
2449
2450     /* copy chapters from the first input file that has them*/
2451     if (!nb_chapter_maps)
2452         for (i = 0; i < nb_input_files; i++) {
2453             if (!input_files[i].ctx->nb_chapters)
2454                 continue;
2455
2456             for (j = 0; j < nb_output_files; j++)
2457                 if ((ret = copy_chapters(i, j)) < 0)
2458                     goto dump_format;
2459             break;
2460         }
2461
2462     /* open files and write file headers */
2463     for(i=0;i<nb_output_files;i++) {
2464         os = output_files[i];
2465         if (av_write_header(os) < 0) {
2466             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
2467             ret = AVERROR(EINVAL);
2468             goto dump_format;
2469         }
2470         if (strcmp(output_files[i]->oformat->name, "rtp")) {
2471             want_sdp = 0;
2472         }
2473     }
2474
2475  dump_format:
2476     /* dump the file output parameters - cannot be done before in case
2477        of stream copy */
2478     for(i=0;i<nb_output_files;i++) {
2479         av_dump_format(output_files[i], i, output_files[i]->filename, 1);
2480     }
2481
2482     /* dump the stream mapping */
2483     if (verbose >= 0) {
2484         fprintf(stderr, "Stream mapping:\n");
2485         for(i=0;i<nb_ostreams;i++) {
2486             ost = ost_table[i];
2487             fprintf(stderr, "  Stream #%d.%d -> #%d.%d",
2488                     input_streams[ost->source_index].file_index,
2489                     input_streams[ost->source_index].st->index,
2490                     ost->file_index,
2491                     ost->index);
2492             if (ost->sync_ist != &input_streams[ost->source_index])
2493                 fprintf(stderr, " [sync #%d.%d]",
2494                         ost->sync_ist->file_index,
2495                         ost->sync_ist->st->index);
2496             fprintf(stderr, "\n");
2497         }
2498     }
2499
2500     if (ret) {
2501         fprintf(stderr, "%s\n", error);
2502         goto fail;
2503     }
2504
2505     if (want_sdp) {
2506         print_sdp(output_files, nb_output_files);
2507     }
2508
2509     if (verbose >= 0)
2510         fprintf(stderr, "Press ctrl-c to stop encoding\n");
2511     term_init();
2512
2513     timer_start = av_gettime();
2514
2515     for(; received_sigterm == 0;) {
2516         int file_index, ist_index;
2517         AVPacket pkt;
2518         double ipts_min;
2519         double opts_min;
2520
2521     redo:
2522         ipts_min= 1e100;
2523         opts_min= 1e100;
2524
2525         /* select the stream that we must read now by looking at the
2526            smallest output pts */
2527         file_index = -1;
2528         for(i=0;i<nb_ostreams;i++) {
2529             double ipts, opts;
2530             ost = ost_table[i];
2531             os = output_files[ost->file_index];
2532             ist = &input_streams[ost->source_index];
2533             if(ist->is_past_recording_time || no_packet[ist->file_index])
2534                 continue;
2535                 opts = ost->st->pts.val * av_q2d(ost->st->time_base);
2536             ipts = (double)ist->pts;
2537             if (!input_files[ist->file_index].eof_reached){
2538                 if(ipts < ipts_min) {
2539                     ipts_min = ipts;
2540                     if(input_sync ) file_index = ist->file_index;
2541                 }
2542                 if(opts < opts_min) {
2543                     opts_min = opts;
2544                     if(!input_sync) file_index = ist->file_index;
2545                 }
2546             }
2547             if(ost->frame_number >= max_frames[ost->st->codec->codec_type]){
2548                 file_index= -1;
2549                 break;
2550             }
2551         }
2552         /* if none, if is finished */
2553         if (file_index < 0) {
2554             if(no_packet_count){
2555                 no_packet_count=0;
2556                 memset(no_packet, 0, sizeof(no_packet));
2557                 usleep(10000);
2558                 continue;
2559             }
2560             break;
2561         }
2562
2563         /* finish if limit size exhausted */
2564         if (limit_filesize != 0 && limit_filesize <= avio_tell(output_files[0]->pb))
2565             break;
2566
2567         /* read a frame from it and output it in the fifo */
2568         is = input_files[file_index].ctx;
2569         ret= av_read_frame(is, &pkt);
2570         if(ret == AVERROR(EAGAIN)){
2571             no_packet[file_index]=1;
2572             no_packet_count++;
2573             continue;
2574         }
2575         if (ret < 0) {
2576             input_files[file_index].eof_reached = 1;
2577             if (opt_shortest)
2578                 break;
2579             else
2580                 continue;
2581         }
2582
2583         no_packet_count=0;
2584         memset(no_packet, 0, sizeof(no_packet));
2585
2586         if (do_pkt_dump) {
2587             av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2588                              is->streams[pkt.stream_index]);
2589         }
2590         /* the following test is needed in case new streams appear
2591            dynamically in stream : we ignore them */
2592         if (pkt.stream_index >= input_files[file_index].ctx->nb_streams)
2593             goto discard_packet;
2594         ist_index = input_files[file_index].ist_index + pkt.stream_index;
2595         ist = &input_streams[ist_index];
2596         if (ist->discard)
2597             goto discard_packet;
2598
2599         if (pkt.dts != AV_NOPTS_VALUE)
2600             pkt.dts += av_rescale_q(input_files_ts_offset[ist->file_index], AV_TIME_BASE_Q, ist->st->time_base);
2601         if (pkt.pts != AV_NOPTS_VALUE)
2602             pkt.pts += av_rescale_q(input_files_ts_offset[ist->file_index], AV_TIME_BASE_Q, ist->st->time_base);
2603
2604         if (pkt.stream_index < nb_input_files_ts_scale[file_index]
2605             && input_files_ts_scale[file_index][pkt.stream_index]){
2606             if(pkt.pts != AV_NOPTS_VALUE)
2607                 pkt.pts *= input_files_ts_scale[file_index][pkt.stream_index];
2608             if(pkt.dts != AV_NOPTS_VALUE)
2609                 pkt.dts *= input_files_ts_scale[file_index][pkt.stream_index];
2610         }
2611
2612 //        fprintf(stderr, "next:%"PRId64" dts:%"PRId64" off:%"PRId64" %d\n", ist->next_pts, pkt.dts, input_files_ts_offset[ist->file_index], ist->st->codec->codec_type);
2613         if (pkt.dts != AV_NOPTS_VALUE && ist->next_pts != AV_NOPTS_VALUE
2614             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2615             int64_t pkt_dts= av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2616             int64_t delta= pkt_dts - ist->next_pts;
2617             if((FFABS(delta) > 1LL*dts_delta_threshold*AV_TIME_BASE || pkt_dts+1<ist->pts)&& !copy_ts){
2618                 input_files_ts_offset[ist->file_index]-= delta;
2619                 if (verbose > 2)
2620                     fprintf(stderr, "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n", delta, input_files_ts_offset[ist->file_index]);
2621                 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2622                 if(pkt.pts != AV_NOPTS_VALUE)
2623                     pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2624             }
2625         }
2626
2627         /* finish if recording time exhausted */
2628         if (recording_time != INT64_MAX &&
2629             av_compare_ts(pkt.pts, ist->st->time_base, recording_time + start_time, (AVRational){1, 1000000}) >= 0) {
2630             ist->is_past_recording_time = 1;
2631             goto discard_packet;
2632         }
2633
2634         //fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->st->index, pkt.size);
2635         if (output_packet(ist, ist_index, ost_table, nb_ostreams, &pkt) < 0) {
2636
2637             if (verbose >= 0)
2638                 fprintf(stderr, "Error while decoding stream #%d.%d\n",
2639                         ist->file_index, ist->st->index);
2640             if (exit_on_error)
2641                 ffmpeg_exit(1);
2642             av_free_packet(&pkt);
2643             goto redo;
2644         }
2645
2646     discard_packet:
2647         av_free_packet(&pkt);
2648
2649         /* dump report by using the output first video and audio streams */
2650         print_report(output_files, ost_table, nb_ostreams, 0);
2651     }
2652
2653     /* at the end of stream, we must flush the decoder buffers */
2654     for (i = 0; i < nb_input_streams; i++) {
2655         ist = &input_streams[i];
2656         if (ist->decoding_needed) {
2657             output_packet(ist, i, ost_table, nb_ostreams, NULL);
2658         }
2659     }
2660
2661     term_exit();
2662
2663     /* write the trailer if needed and close file */
2664     for(i=0;i<nb_output_files;i++) {
2665         os = output_files[i];
2666         av_write_trailer(os);
2667     }
2668
2669     /* dump report by using the first video and audio streams */
2670     print_report(output_files, ost_table, nb_ostreams, 1);
2671
2672     /* close each encoder */
2673     for(i=0;i<nb_ostreams;i++) {
2674         ost = ost_table[i];
2675         if (ost->encoding_needed) {
2676             av_freep(&ost->st->codec->stats_in);
2677             avcodec_close(ost->st->codec);
2678         }
2679 #if CONFIG_AVFILTER
2680         avfilter_graph_free(&ost->graph);
2681 #endif
2682     }
2683
2684     /* close each decoder */
2685     for (i = 0; i < nb_input_streams; i++) {
2686         ist = &input_streams[i];
2687         if (ist->decoding_needed) {
2688             avcodec_close(ist->st->codec);
2689         }
2690     }
2691
2692     /* finished ! */
2693     ret = 0;
2694
2695  fail:
2696     av_freep(&bit_buffer);
2697
2698     if (ost_table) {
2699         for(i=0;i<nb_ostreams;i++) {
2700             ost = ost_table[i];
2701             if (ost) {
2702                 if (ost->st->stream_copy)
2703                     av_freep(&ost->st->codec->extradata);
2704                 if (ost->logfile) {
2705                     fclose(ost->logfile);
2706                     ost->logfile = NULL;
2707                 }
2708                 av_fifo_free(ost->fifo); /* works even if fifo is not
2709                                              initialized but set to zero */
2710                 av_freep(&ost->st->codec->subtitle_header);
2711                 av_free(ost->pict_tmp.data[0]);
2712                 av_free(ost->forced_kf_pts);
2713                 if (ost->video_resample)
2714                     sws_freeContext(ost->img_resample_ctx);
2715                 if (ost->resample)
2716                     audio_resample_close(ost->resample);
2717                 if (ost->reformat_ctx)
2718                     av_audio_convert_free(ost->reformat_ctx);
2719                 av_free(ost);
2720             }
2721         }
2722         av_free(ost_table);
2723     }
2724     return ret;
2725 }
2726
2727 static int opt_format(const char *opt, const char *arg)
2728 {
2729     last_asked_format = arg;
2730     return 0;
2731 }
2732
2733 static int opt_video_rc_override_string(const char *opt, const char *arg)
2734 {
2735     video_rc_override_string = arg;
2736     return 0;
2737 }
2738
2739 static int opt_me_threshold(const char *opt, const char *arg)
2740 {
2741     me_threshold = parse_number_or_die(opt, arg, OPT_INT64, INT_MIN, INT_MAX);
2742     return 0;
2743 }
2744
2745 static int opt_verbose(const char *opt, const char *arg)
2746 {
2747     verbose = parse_number_or_die(opt, arg, OPT_INT64, -10, 10);
2748     return 0;
2749 }
2750
2751 static int opt_frame_rate(const char *opt, const char *arg)
2752 {
2753     if (av_parse_video_rate(&frame_rate, arg) < 0) {
2754         fprintf(stderr, "Incorrect value for %s: %s\n", opt, arg);
2755         ffmpeg_exit(1);
2756     }
2757     return 0;
2758 }
2759
2760 static int opt_bitrate(const char *opt, const char *arg)
2761 {
2762     int codec_type = opt[0]=='a' ? AVMEDIA_TYPE_AUDIO : AVMEDIA_TYPE_VIDEO;
2763
2764     opt_default(opt, arg);
2765
2766     if (av_get_int(avcodec_opts[codec_type], "b", NULL) < 1000)
2767         fprintf(stderr, "WARNING: The bitrate parameter is set too low. It takes bits/s as argument, not kbits/s\n");
2768
2769     return 0;
2770 }
2771
2772 static int opt_frame_crop(const char *opt, const char *arg)
2773 {
2774     fprintf(stderr, "Option '%s' has been removed, use the crop filter instead\n", opt);
2775     return AVERROR(EINVAL);
2776 }
2777
2778 static int opt_frame_size(const char *opt, const char *arg)
2779 {
2780     if (av_parse_video_size(&frame_width, &frame_height, arg) < 0) {
2781         fprintf(stderr, "Incorrect frame size\n");
2782         return AVERROR(EINVAL);
2783     }
2784     return 0;
2785 }
2786
2787 static int opt_pad(const char *opt, const char *arg) {
2788     fprintf(stderr, "Option '%s' has been removed, use the pad filter instead\n", opt);
2789     return -1;
2790 }
2791
2792 static int opt_frame_pix_fmt(const char *opt, const char *arg)
2793 {
2794     if (strcmp(arg, "list")) {
2795         frame_pix_fmt = av_get_pix_fmt(arg);
2796         if (frame_pix_fmt == PIX_FMT_NONE) {
2797             fprintf(stderr, "Unknown pixel format requested: %s\n", arg);
2798             return AVERROR(EINVAL);
2799         }
2800     } else {
2801         show_pix_fmts();
2802         ffmpeg_exit(0);
2803     }
2804     return 0;
2805 }
2806
2807 static int opt_frame_aspect_ratio(const char *opt, const char *arg)
2808 {
2809     int x = 0, y = 0;
2810     double ar = 0;
2811     const char *p;
2812     char *end;
2813
2814     p = strchr(arg, ':');
2815     if (p) {
2816         x = strtol(arg, &end, 10);
2817         if (end == p)
2818             y = strtol(end+1, &end, 10);
2819         if (x > 0 && y > 0)
2820             ar = (double)x / (double)y;
2821     } else
2822         ar = strtod(arg, NULL);
2823
2824     if (!ar) {
2825         fprintf(stderr, "Incorrect aspect ratio specification.\n");
2826         return AVERROR(EINVAL);
2827     }
2828     frame_aspect_ratio = ar;
2829     return 0;
2830 }
2831
2832 static int opt_metadata(const char *opt, const char *arg)
2833 {
2834     char *mid= strchr(arg, '=');
2835
2836     if(!mid){
2837         fprintf(stderr, "Missing =\n");
2838         ffmpeg_exit(1);
2839     }
2840     *mid++= 0;
2841
2842     av_dict_set(&metadata, arg, mid, 0);
2843
2844     return 0;
2845 }
2846
2847 static int opt_qscale(const char *opt, const char *arg)
2848 {
2849     video_qscale = parse_number_or_die(opt, arg, OPT_FLOAT, 0, 255);
2850     if (video_qscale == 0) {
2851         fprintf(stderr, "qscale must be > 0.0 and <= 255\n");
2852         return AVERROR(EINVAL);
2853     }
2854     return 0;
2855 }
2856
2857 static int opt_top_field_first(const char *opt, const char *arg)
2858 {
2859     top_field_first = parse_number_or_die(opt, arg, OPT_INT, 0, 1);
2860     return 0;
2861 }
2862
2863 static int opt_thread_count(const char *opt, const char *arg)
2864 {
2865     thread_count= parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2866 #if !HAVE_THREADS
2867     if (verbose >= 0)
2868         fprintf(stderr, "Warning: not compiled with thread support, using thread emulation\n");
2869 #endif
2870     return 0;
2871 }
2872
2873 static int opt_audio_sample_fmt(const char *opt, const char *arg)
2874 {
2875     if (strcmp(arg, "list")) {
2876         audio_sample_fmt = av_get_sample_fmt(arg);
2877         if (audio_sample_fmt == AV_SAMPLE_FMT_NONE) {
2878             av_log(NULL, AV_LOG_ERROR, "Invalid sample format '%s'\n", arg);
2879             return AVERROR(EINVAL);
2880         }
2881     } else {
2882         int i;
2883         char fmt_str[128];
2884         for (i = -1; i < AV_SAMPLE_FMT_NB; i++)
2885             printf("%s\n", av_get_sample_fmt_string(fmt_str, sizeof(fmt_str), i));
2886         ffmpeg_exit(0);
2887     }
2888     return 0;
2889 }
2890
2891 static int opt_audio_rate(const char *opt, const char *arg)
2892 {
2893     audio_sample_rate = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2894     return 0;
2895 }
2896
2897 static int opt_audio_channels(const char *opt, const char *arg)
2898 {
2899     audio_channels = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2900     return 0;
2901 }
2902
2903 static int opt_video_channel(const char *opt, const char *arg)
2904 {
2905     video_channel = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2906     return 0;
2907 }
2908
2909 static int opt_video_standard(const char *opt, const char *arg)
2910 {
2911     video_standard = av_strdup(arg);
2912     return 0;
2913 }
2914
2915 static int opt_codec(int *pstream_copy, char **pcodec_name,
2916                       int codec_type, const char *arg)
2917 {
2918     av_freep(pcodec_name);
2919     if (!strcmp(arg, "copy")) {
2920         *pstream_copy = 1;
2921     } else {
2922         *pcodec_name = av_strdup(arg);
2923     }
2924     return 0;
2925 }
2926
2927 static int opt_audio_codec(const char *opt, const char *arg)
2928 {
2929     return opt_codec(&audio_stream_copy, &audio_codec_name, AVMEDIA_TYPE_AUDIO, arg);
2930 }
2931
2932 static int opt_video_codec(const char *opt, const char *arg)
2933 {
2934     return opt_codec(&video_stream_copy, &video_codec_name, AVMEDIA_TYPE_VIDEO, arg);
2935 }
2936
2937 static int opt_subtitle_codec(const char *opt, const char *arg)
2938 {
2939     return opt_codec(&subtitle_stream_copy, &subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, arg);
2940 }
2941
2942 static int opt_data_codec(const char *opt, const char *arg)
2943 {
2944     return opt_codec(&data_stream_copy, &data_codec_name, AVMEDIA_TYPE_DATA, arg);
2945 }
2946
2947 static int opt_codec_tag(const char *opt, const char *arg)
2948 {
2949     char *tail;
2950     uint32_t *codec_tag;
2951
2952     codec_tag = !strcmp(opt, "atag") ? &audio_codec_tag :
2953                 !strcmp(opt, "vtag") ? &video_codec_tag :
2954                 !strcmp(opt, "stag") ? &subtitle_codec_tag : NULL;
2955     if (!codec_tag)
2956         return -1;
2957
2958     *codec_tag = strtol(arg, &tail, 0);
2959     if (!tail || *tail)
2960         *codec_tag = AV_RL32(arg);
2961
2962     return 0;
2963 }
2964
2965 static int opt_map(const char *opt, const char *arg)
2966 {
2967     AVStreamMap *m;
2968     char *p;
2969
2970     stream_maps = grow_array(stream_maps, sizeof(*stream_maps), &nb_stream_maps, nb_stream_maps + 1);
2971     m = &stream_maps[nb_stream_maps-1];
2972
2973     m->file_index = strtol(arg, &p, 0);
2974     if (*p)
2975         p++;
2976
2977     m->stream_index = strtol(p, &p, 0);
2978     if (*p) {
2979         p++;
2980         m->sync_file_index = strtol(p, &p, 0);
2981         if (*p)
2982             p++;
2983         m->sync_stream_index = strtol(p, &p, 0);
2984     } else {
2985         m->sync_file_index = m->file_index;
2986         m->sync_stream_index = m->stream_index;
2987     }
2988     return 0;
2989 }
2990
2991 static void parse_meta_type(char *arg, char *type, int *index, char **endptr)
2992 {
2993     *endptr = arg;
2994     if (*arg == ',') {
2995         *type = *(++arg);
2996         switch (*arg) {
2997         case 'g':
2998             break;
2999         case 's':
3000         case 'c':
3001         case 'p':
3002             *index = strtol(++arg, endptr, 0);
3003             break;
3004         default:
3005             fprintf(stderr, "Invalid metadata type %c.\n", *arg);
3006             ffmpeg_exit(1);
3007         }
3008     } else
3009         *type = 'g';
3010 }
3011
3012 static int opt_map_metadata(const char *opt, const char *arg)
3013 {
3014     AVMetaDataMap *m, *m1;
3015     char *p;
3016
3017     meta_data_maps = grow_array(meta_data_maps, sizeof(*meta_data_maps),
3018                                 &nb_meta_data_maps, nb_meta_data_maps + 1);
3019
3020     m = &meta_data_maps[nb_meta_data_maps - 1][0];
3021     m->file = strtol(arg, &p, 0);
3022     parse_meta_type(p, &m->type, &m->index, &p);
3023     if (*p)
3024         p++;
3025
3026     m1 = &meta_data_maps[nb_meta_data_maps - 1][1];
3027     m1->file = strtol(p, &p, 0);
3028     parse_meta_type(p, &m1->type, &m1->index, &p);
3029
3030     if (m->type == 'g' || m1->type == 'g')
3031         metadata_global_autocopy = 0;
3032     if (m->type == 's' || m1->type == 's')
3033         metadata_streams_autocopy = 0;
3034     if (m->type == 'c' || m1->type == 'c')
3035         metadata_chapters_autocopy = 0;
3036
3037     return 0;
3038 }
3039
3040 static int opt_map_meta_data(const char *opt, const char *arg)
3041 {
3042     fprintf(stderr, "-map_meta_data is deprecated and will be removed soon. "
3043                     "Use -map_metadata instead.\n");
3044     return opt_map_metadata(opt, arg);
3045 }
3046
3047 static int opt_map_chapters(const char *opt, const char *arg)
3048 {
3049     AVChapterMap *c;
3050     char *p;
3051
3052     chapter_maps = grow_array(chapter_maps, sizeof(*chapter_maps), &nb_chapter_maps,
3053                               nb_chapter_maps + 1);
3054     c = &chapter_maps[nb_chapter_maps - 1];
3055     c->out_file = strtol(arg, &p, 0);
3056     if (*p)
3057         p++;
3058
3059     c->in_file = strtol(p, &p, 0);
3060     return 0;
3061 }
3062
3063 static int opt_input_ts_scale(const char *opt, const char *arg)
3064 {
3065     unsigned int stream;
3066     double scale;
3067     char *p;
3068
3069     stream = strtol(arg, &p, 0);
3070     if (*p)
3071         p++;
3072     scale= strtod(p, &p);
3073
3074     if(stream >= MAX_STREAMS)
3075         ffmpeg_exit(1);
3076
3077     input_files_ts_scale[nb_input_files] = grow_array(input_files_ts_scale[nb_input_files], sizeof(*input_files_ts_scale[nb_input_files]), &nb_input_files_ts_scale[nb_input_files], stream + 1);
3078     input_files_ts_scale[nb_input_files][stream]= scale;
3079     return 0;
3080 }
3081
3082 static int opt_recording_time(const char *opt, const char *arg)
3083 {
3084     recording_time = parse_time_or_die(opt, arg, 1);
3085     return 0;
3086 }
3087
3088 static int opt_start_time(const char *opt, const char *arg)
3089 {
3090     start_time = parse_time_or_die(opt, arg, 1);
3091     return 0;
3092 }
3093
3094 static int opt_recording_timestamp(const char *opt, const char *arg)
3095 {
3096     recording_timestamp = parse_time_or_die(opt, arg, 0) / 1000000;
3097     return 0;
3098 }
3099
3100 static int opt_input_ts_offset(const char *opt, const char *arg)
3101 {
3102     input_ts_offset = parse_time_or_die(opt, arg, 1);
3103     return 0;
3104 }
3105
3106 static enum CodecID find_codec_or_die(const char *name, int type, int encoder, int strict)
3107 {
3108     const char *codec_string = encoder ? "encoder" : "decoder";
3109     AVCodec *codec;
3110
3111     if(!name)
3112         return CODEC_ID_NONE;
3113     codec = encoder ?
3114         avcodec_find_encoder_by_name(name) :
3115         avcodec_find_decoder_by_name(name);
3116     if(!codec) {
3117         fprintf(stderr, "Unknown %s '%s'\n", codec_string, name);
3118         ffmpeg_exit(1);
3119     }
3120     if(codec->type != type) {
3121         fprintf(stderr, "Invalid %s type '%s'\n", codec_string, name);
3122         ffmpeg_exit(1);
3123     }
3124     if(codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
3125        strict > FF_COMPLIANCE_EXPERIMENTAL) {
3126         fprintf(stderr, "%s '%s' is experimental and might produce bad "
3127                 "results.\nAdd '-strict experimental' if you want to use it.\n",
3128                 codec_string, codec->name);
3129         codec = encoder ?
3130             avcodec_find_encoder(codec->id) :
3131             avcodec_find_decoder(codec->id);
3132         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
3133             fprintf(stderr, "Or use the non experimental %s '%s'.\n",
3134                     codec_string, codec->name);
3135         ffmpeg_exit(1);
3136     }
3137     return codec->id;
3138 }
3139
3140 static int opt_input_file(const char *opt, const char *filename)
3141 {
3142     AVFormatContext *ic;
3143     AVFormatParameters params, *ap = &params;
3144     AVInputFormat *file_iformat = NULL;
3145     int err, i, ret, rfps, rfps_base;
3146     int64_t timestamp;
3147
3148     if (last_asked_format) {
3149         if (!(file_iformat = av_find_input_format(last_asked_format))) {
3150             fprintf(stderr, "Unknown input format: '%s'\n", last_asked_format);
3151             ffmpeg_exit(1);
3152         }
3153         last_asked_format = NULL;
3154     }
3155
3156     if (!strcmp(filename, "-"))
3157         filename = "pipe:";
3158
3159     using_stdin |= !strncmp(filename, "pipe:", 5) ||
3160                     !strcmp(filename, "/dev/stdin");
3161
3162     /* get default parameters from command line */
3163     ic = avformat_alloc_context();
3164     if (!ic) {
3165         print_error(filename, AVERROR(ENOMEM));
3166         ffmpeg_exit(1);
3167     }
3168
3169     memset(ap, 0, sizeof(*ap));
3170     ap->prealloced_context = 1;
3171     ap->sample_rate = audio_sample_rate;
3172     ap->channels = audio_channels;
3173     ap->time_base.den = frame_rate.num;
3174     ap->time_base.num = frame_rate.den;
3175     ap->width = frame_width;
3176     ap->height = frame_height;
3177     ap->pix_fmt = frame_pix_fmt;
3178    // ap->sample_fmt = audio_sample_fmt; //FIXME:not implemented in libavformat
3179     ap->channel = video_channel;
3180     ap->standard = video_standard;
3181
3182     set_context_opts(ic, avformat_opts, AV_OPT_FLAG_DECODING_PARAM, NULL);
3183
3184     ic->video_codec_id   =
3185         find_codec_or_die(video_codec_name   , AVMEDIA_TYPE_VIDEO   , 0,
3186                           avcodec_opts[AVMEDIA_TYPE_VIDEO   ]->strict_std_compliance);
3187     ic->audio_codec_id   =
3188         find_codec_or_die(audio_codec_name   , AVMEDIA_TYPE_AUDIO   , 0,
3189                           avcodec_opts[AVMEDIA_TYPE_AUDIO   ]->strict_std_compliance);
3190     ic->subtitle_codec_id=
3191         find_codec_or_die(subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, 0,
3192                           avcodec_opts[AVMEDIA_TYPE_SUBTITLE]->strict_std_compliance);
3193     ic->flags |= AVFMT_FLAG_NONBLOCK;
3194
3195     /* open the input file with generic libav function */
3196     err = av_open_input_file(&ic, filename, file_iformat, 0, ap);
3197     if (err < 0) {
3198         print_error(filename, err);
3199         ffmpeg_exit(1);
3200     }
3201     if(opt_programid) {
3202         int i, j;
3203         int found=0;
3204         for(i=0; i<ic->nb_streams; i++){
3205             ic->streams[i]->discard= AVDISCARD_ALL;
3206         }
3207         for(i=0; i<ic->nb_programs; i++){
3208             AVProgram *p= ic->programs[i];
3209             if(p->id != opt_programid){
3210                 p->discard = AVDISCARD_ALL;
3211             }else{
3212                 found=1;
3213                 for(j=0; j<p->nb_stream_indexes; j++){
3214                     ic->streams[p->stream_index[j]]->discard= AVDISCARD_DEFAULT;
3215                 }
3216             }
3217         }
3218         if(!found){
3219             fprintf(stderr, "Specified program id not found\n");
3220             ffmpeg_exit(1);
3221         }
3222         opt_programid=0;
3223     }
3224
3225     ic->loop_input = loop_input;
3226
3227     /* Set AVCodecContext options so they will be seen by av_find_stream_info() */
3228     for (i = 0; i < ic->nb_streams; i++) {
3229         AVCodecContext *dec = ic->streams[i]->codec;
3230         switch (dec->codec_type) {
3231         case AVMEDIA_TYPE_AUDIO:
3232             set_context_opts(dec, avcodec_opts[AVMEDIA_TYPE_AUDIO],
3233                              AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_DECODING_PARAM,
3234                              NULL);
3235             break;
3236         case AVMEDIA_TYPE_VIDEO:
3237             set_context_opts(dec, avcodec_opts[AVMEDIA_TYPE_VIDEO],
3238                              AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM,
3239                              NULL);
3240             break;
3241         }
3242     }
3243
3244     /* If not enough info to get the stream parameters, we decode the
3245        first frames to get it. (used in mpeg case for example) */
3246     ret = av_find_stream_info(ic);
3247     if (ret < 0 && verbose >= 0) {
3248         fprintf(stderr, "%s: could not find codec parameters\n", filename);
3249         av_close_input_file(ic);
3250         ffmpeg_exit(1);
3251     }
3252
3253     timestamp = start_time;
3254     /* add the stream start time */
3255     if (ic->start_time != AV_NOPTS_VALUE)
3256         timestamp += ic->start_time;
3257
3258     /* if seeking requested, we execute it */
3259     if (start_time != 0) {
3260         ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
3261         if (ret < 0) {
3262             fprintf(stderr, "%s: could not seek to position %0.3f\n",
3263                     filename, (double)timestamp / AV_TIME_BASE);
3264         }
3265         /* reset seek info */
3266         start_time = 0;
3267     }
3268
3269     /* update the current parameters so that they match the one of the input stream */
3270     for(i=0;i<ic->nb_streams;i++) {
3271         AVStream *st = ic->streams[i];
3272         AVCodecContext *dec = st->codec;
3273         AVInputStream *ist;
3274
3275         dec->thread_count = thread_count;
3276         input_codecs = grow_array(input_codecs, sizeof(*input_codecs), &nb_input_codecs, nb_input_codecs + 1);
3277
3278         input_streams = grow_array(input_streams, sizeof(*input_streams), &nb_input_streams, nb_input_streams + 1);
3279         ist = &input_streams[nb_input_streams - 1];
3280         ist->st = st;
3281         ist->file_index = nb_input_files;
3282         ist->discard = 1;
3283
3284         switch (dec->codec_type) {
3285         case AVMEDIA_TYPE_AUDIO:
3286             input_codecs[nb_input_codecs-1] = avcodec_find_decoder_by_name(audio_codec_name);
3287             set_context_opts(dec, avcodec_opts[AVMEDIA_TYPE_AUDIO], AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_DECODING_PARAM, input_codecs[nb_input_codecs-1]);
3288             channel_layout    = dec->channel_layout;
3289             audio_sample_fmt  = dec->sample_fmt;
3290             if(audio_disable)
3291                 st->discard= AVDISCARD_ALL;
3292             break;
3293         case AVMEDIA_TYPE_VIDEO:
3294             input_codecs[nb_input_codecs-1] = avcodec_find_decoder_by_name(video_codec_name);
3295             set_context_opts(dec, avcodec_opts[AVMEDIA_TYPE_VIDEO], AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM, input_codecs[nb_input_codecs-1]);
3296             frame_height = dec->height;
3297             frame_width  = dec->width;
3298             frame_pix_fmt = dec->pix_fmt;
3299             rfps      = ic->streams[i]->r_frame_rate.num;
3300             rfps_base = ic->streams[i]->r_frame_rate.den;
3301             if (dec->lowres) {
3302                 dec->flags |= CODEC_FLAG_EMU_EDGE;
3303                 frame_height >>= dec->lowres;
3304                 frame_width  >>= dec->lowres;
3305                 dec->height = frame_height;
3306                 dec->width  = frame_width;
3307             }
3308             if(me_threshold)
3309                 dec->debug |= FF_DEBUG_MV;
3310
3311             if (dec->time_base.den != rfps*dec->ticks_per_frame || dec->time_base.num != rfps_base) {
3312
3313                 if (verbose >= 0)
3314                     fprintf(stderr,"\nSeems stream %d codec frame rate differs from container frame rate: %2.2f (%d/%d) -> %2.2f (%d/%d)\n",
3315                             i, (float)dec->time_base.den / dec->time_base.num, dec->time_base.den, dec->time_base.num,
3316
3317                     (float)rfps / rfps_base, rfps, rfps_base);
3318             }
3319
3320             if(video_disable)
3321                 st->discard= AVDISCARD_ALL;
3322             else if(video_discard)
3323                 st->discard= video_discard;
3324             break;
3325         case AVMEDIA_TYPE_DATA:
3326             break;
3327         case AVMEDIA_TYPE_SUBTITLE:
3328             input_codecs[nb_input_codecs-1] = avcodec_find_decoder_by_name(subtitle_codec_name);
3329             if(subtitle_disable)
3330                 st->discard = AVDISCARD_ALL;
3331             break;
3332         case AVMEDIA_TYPE_ATTACHMENT:
3333         case AVMEDIA_TYPE_UNKNOWN:
3334             break;
3335         default:
3336             abort();
3337         }
3338     }
3339
3340     input_files_ts_offset[nb_input_files] = input_ts_offset - (copy_ts ? 0 : timestamp);
3341     /* dump the file content */
3342     if (verbose >= 0)
3343         av_dump_format(ic, nb_input_files, filename, 0);
3344
3345     input_files = grow_array(input_files, sizeof(*input_files), &nb_input_files, nb_input_files + 1);
3346     input_files[nb_input_files - 1].ctx        = ic;
3347     input_files[nb_input_files - 1].ist_index  = nb_input_streams - ic->nb_streams;
3348
3349     video_channel = 0;
3350     frame_rate    = (AVRational){0, 0};
3351     audio_sample_rate = 0;
3352     audio_channels    = 0;
3353
3354     av_freep(&video_codec_name);
3355     av_freep(&audio_codec_name);
3356     av_freep(&subtitle_codec_name);
3357     uninit_opts();
3358     init_opts();
3359     return 0;
3360 }
3361
3362 static void check_inputs(int *has_video_ptr,
3363                          int *has_audio_ptr,
3364                          int *has_subtitle_ptr,
3365                          int *has_data_ptr)
3366 {
3367     int has_video, has_audio, has_subtitle, has_data, i, j;
3368     AVFormatContext *ic;
3369
3370     has_video = 0;
3371     has_audio = 0;
3372     has_subtitle = 0;
3373     has_data = 0;
3374
3375     for(j=0;j<nb_input_files;j++) {
3376         ic = input_files[j].ctx;
3377         for(i=0;i<ic->nb_streams;i++) {
3378             AVCodecContext *enc = ic->streams[i]->codec;
3379             switch(enc->codec_type) {
3380             case AVMEDIA_TYPE_AUDIO:
3381                 has_audio = 1;
3382                 break;
3383             case AVMEDIA_TYPE_VIDEO:
3384                 has_video = 1;
3385                 break;
3386             case AVMEDIA_TYPE_SUBTITLE:
3387                 has_subtitle = 1;
3388                 break;
3389             case AVMEDIA_TYPE_DATA:
3390             case AVMEDIA_TYPE_ATTACHMENT:
3391             case AVMEDIA_TYPE_UNKNOWN:
3392                 has_data = 1;
3393                 break;
3394             default:
3395                 abort();
3396             }
3397         }
3398     }
3399     *has_video_ptr = has_video;
3400     *has_audio_ptr = has_audio;
3401     *has_subtitle_ptr = has_subtitle;
3402     *has_data_ptr = has_data;
3403 }
3404
3405 static void new_video_stream(AVFormatContext *oc, int file_idx)
3406 {
3407     AVStream *st;
3408     AVOutputStream *ost;
3409     AVCodecContext *video_enc;
3410     enum CodecID codec_id = CODEC_ID_NONE;
3411     AVCodec *codec= NULL;
3412
3413     st = av_new_stream(oc, oc->nb_streams < nb_streamid_map ? streamid_map[oc->nb_streams] : 0);
3414     if (!st) {
3415         fprintf(stderr, "Could not alloc stream\n");
3416         ffmpeg_exit(1);
3417     }
3418     ost = new_output_stream(oc, file_idx);
3419
3420     if(!video_stream_copy){
3421         if (video_codec_name) {
3422             codec_id = find_codec_or_die(video_codec_name, AVMEDIA_TYPE_VIDEO, 1,
3423                                          avcodec_opts[AVMEDIA_TYPE_VIDEO]->strict_std_compliance);
3424             codec = avcodec_find_encoder_by_name(video_codec_name);
3425             ost->enc = codec;
3426         } else {
3427             codec_id = av_guess_codec(oc->oformat, NULL, oc->filename, NULL, AVMEDIA_TYPE_VIDEO);
3428             codec = avcodec_find_encoder(codec_id);
3429         }
3430
3431         ost->frame_aspect_ratio = frame_aspect_ratio;
3432         frame_aspect_ratio = 0;
3433 #if CONFIG_AVFILTER
3434         ost->avfilter= vfilters;
3435         vfilters = NULL;
3436 #endif
3437     }
3438
3439     avcodec_get_context_defaults3(st->codec, codec);
3440     ost->bitstream_filters = video_bitstream_filters;
3441     video_bitstream_filters= NULL;
3442
3443     st->codec->thread_count= thread_count;
3444
3445     video_enc = st->codec;
3446
3447     if(video_codec_tag)
3448         video_enc->codec_tag= video_codec_tag;
3449
3450     if(oc->oformat->flags & AVFMT_GLOBALHEADER) {
3451         video_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3452         avcodec_opts[AVMEDIA_TYPE_VIDEO]->flags|= CODEC_FLAG_GLOBAL_HEADER;
3453     }
3454
3455     if (video_stream_copy) {
3456         st->stream_copy = 1;
3457         video_enc->codec_type = AVMEDIA_TYPE_VIDEO;
3458         video_enc->sample_aspect_ratio =
3459         st->sample_aspect_ratio = av_d2q(frame_aspect_ratio*frame_height/frame_width, 255);
3460     } else {
3461         const char *p;
3462         int i;
3463
3464         if (frame_rate.num)
3465             ost->frame_rate = frame_rate;
3466         video_enc->codec_id = codec_id;
3467         set_context_opts(video_enc, avcodec_opts[AVMEDIA_TYPE_VIDEO], AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM, codec);
3468
3469         video_enc->width = frame_width;
3470         video_enc->height = frame_height;
3471         video_enc->pix_fmt = frame_pix_fmt;
3472         st->sample_aspect_ratio = video_enc->sample_aspect_ratio;
3473
3474         choose_pixel_fmt(st, codec);
3475
3476         if (intra_only)
3477             video_enc->gop_size = 0;
3478         if (video_qscale || same_quality) {
3479             video_enc->flags |= CODEC_FLAG_QSCALE;
3480             video_enc->global_quality=
3481                 st->quality = FF_QP2LAMBDA * video_qscale;
3482         }
3483
3484         if(intra_matrix)
3485             video_enc->intra_matrix = intra_matrix;
3486         if(inter_matrix)
3487             video_enc->inter_matrix = inter_matrix;
3488
3489         p= video_rc_override_string;
3490         for(i=0; p; i++){
3491             int start, end, q;
3492             int e=sscanf(p, "%d,%d,%d", &start, &end, &q);
3493             if(e!=3){
3494                 fprintf(stderr, "error parsing rc_override\n");
3495                 ffmpeg_exit(1);
3496             }
3497             video_enc->rc_override=
3498                 av_realloc(video_enc->rc_override,
3499                            sizeof(RcOverride)*(i+1));
3500             video_enc->rc_override[i].start_frame= start;
3501             video_enc->rc_override[i].end_frame  = end;
3502             if(q>0){
3503                 video_enc->rc_override[i].qscale= q;
3504                 video_enc->rc_override[i].quality_factor= 1.0;
3505             }
3506             else{
3507                 video_enc->rc_override[i].qscale= 0;
3508                 video_enc->rc_override[i].quality_factor= -q/100.0;
3509             }
3510             p= strchr(p, '/');
3511             if(p) p++;
3512         }
3513         video_enc->rc_override_count=i;
3514         if (!video_enc->rc_initial_buffer_occupancy)
3515             video_enc->rc_initial_buffer_occupancy = video_enc->rc_buffer_size*3/4;
3516         video_enc->me_threshold= me_threshold;
3517         video_enc->intra_dc_precision= intra_dc_precision - 8;
3518
3519         if (do_psnr)
3520             video_enc->flags|= CODEC_FLAG_PSNR;
3521
3522         /* two pass mode */
3523         if (do_pass) {
3524             if (do_pass == 1) {
3525                 video_enc->flags |= CODEC_FLAG_PASS1;
3526             } else {
3527                 video_enc->flags |= CODEC_FLAG_PASS2;
3528             }
3529         }
3530
3531         if (forced_key_frames)
3532             parse_forced_key_frames(forced_key_frames, ost, video_enc);
3533     }
3534     if (video_language) {
3535         av_dict_set(&st->metadata, "language", video_language, 0);
3536         av_freep(&video_language);
3537     }
3538
3539     /* reset some key parameters */
3540     video_disable = 0;
3541     av_freep(&video_codec_name);
3542     av_freep(&forced_key_frames);
3543     video_stream_copy = 0;
3544     frame_pix_fmt = PIX_FMT_NONE;
3545 }
3546
3547 static void new_audio_stream(AVFormatContext *oc, int file_idx)
3548 {
3549     AVStream *st;
3550     AVOutputStream *ost;
3551     AVCodec *codec= NULL;
3552     AVCodecContext *audio_enc;
3553     enum CodecID codec_id = CODEC_ID_NONE;
3554
3555     st = av_new_stream(oc, oc->nb_streams < nb_streamid_map ? streamid_map[oc->nb_streams] : 0);
3556     if (!st) {
3557         fprintf(stderr, "Could not alloc stream\n");
3558         ffmpeg_exit(1);
3559     }
3560     ost = new_output_stream(oc, file_idx);
3561
3562     if(!audio_stream_copy){
3563         if (audio_codec_name) {
3564             codec_id = find_codec_or_die(audio_codec_name, AVMEDIA_TYPE_AUDIO, 1,
3565                                          avcodec_opts[AVMEDIA_TYPE_AUDIO]->strict_std_compliance);
3566             codec = avcodec_find_encoder_by_name(audio_codec_name);
3567             ost->enc = codec;
3568         } else {
3569             codec_id = av_guess_codec(oc->oformat, NULL, oc->filename, NULL, AVMEDIA_TYPE_AUDIO);
3570             codec = avcodec_find_encoder(codec_id);
3571         }
3572     }
3573
3574     avcodec_get_context_defaults3(st->codec, codec);
3575
3576     ost->bitstream_filters = audio_bitstream_filters;
3577     audio_bitstream_filters= NULL;
3578
3579     st->codec->thread_count= thread_count;
3580
3581     audio_enc = st->codec;
3582     audio_enc->codec_type = AVMEDIA_TYPE_AUDIO;
3583
3584     if(audio_codec_tag)
3585         audio_enc->codec_tag= audio_codec_tag;
3586
3587     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3588         audio_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3589         avcodec_opts[AVMEDIA_TYPE_AUDIO]->flags|= CODEC_FLAG_GLOBAL_HEADER;
3590     }
3591     if (audio_stream_copy) {
3592         st->stream_copy = 1;
3593     } else {
3594         audio_enc->codec_id = codec_id;
3595         set_context_opts(audio_enc, avcodec_opts[AVMEDIA_TYPE_AUDIO], AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM, codec);
3596
3597         if (audio_qscale > QSCALE_NONE) {
3598             audio_enc->flags |= CODEC_FLAG_QSCALE;
3599             audio_enc->global_quality = st->quality = FF_QP2LAMBDA * audio_qscale;
3600         }
3601         if (audio_channels)
3602             audio_enc->channels = audio_channels;
3603         audio_enc->sample_fmt = audio_sample_fmt;
3604         if (audio_sample_rate)
3605             audio_enc->sample_rate = audio_sample_rate;
3606         audio_enc->channel_layout = channel_layout;
3607         choose_sample_fmt(st, codec);
3608     }
3609     if (audio_language) {
3610         av_dict_set(&st->metadata, "language", audio_language, 0);
3611         av_freep(&audio_language);
3612     }
3613
3614     /* reset some key parameters */
3615     audio_disable = 0;
3616     av_freep(&audio_codec_name);
3617     audio_stream_copy = 0;
3618 }
3619
3620 static void new_data_stream(AVFormatContext *oc, int file_idx)
3621 {
3622     AVStream *st;
3623     AVCodec *codec=NULL;
3624     AVCodecContext *data_enc;
3625
3626     st = av_new_stream(oc, oc->nb_streams < nb_streamid_map ? streamid_map[oc->nb_streams] : 0);
3627     if (!st) {
3628         fprintf(stderr, "Could not alloc stream\n");
3629         ffmpeg_exit(1);
3630     }
3631     new_output_stream(oc, file_idx);
3632     data_enc = st->codec;
3633     if (!data_stream_copy) {
3634         fprintf(stderr, "Data stream encoding not supported yet (only streamcopy)\n");
3635         ffmpeg_exit(1);
3636     }
3637     avcodec_get_context_defaults3(st->codec, codec);
3638
3639     data_enc->codec_type = AVMEDIA_TYPE_DATA;
3640
3641     if (data_codec_tag)
3642         data_enc->codec_tag= data_codec_tag;
3643
3644     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3645         data_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3646         avcodec_opts[AVMEDIA_TYPE_DATA]->flags |= CODEC_FLAG_GLOBAL_HEADER;
3647     }
3648     if (data_stream_copy) {
3649         st->stream_copy = 1;